BMW B38 engine: the complete buyer's guide

The B38 is BMW's 1.5 litre three-cylinder turbo petrol, used in the F20 116i and 118i, the F30 318i, the F45 and F46 218i, the F48 X1 sDrive18i, the MINI F56 Cooper and the i8 hybrid.

It is efficient and surprisingly smooth. As a replacement it is popular because it is common and affordable.

• Production: 2014–2026
• Versions covered: B38B15, B38A15 and B38B15A
• Output range: 136–140 hp
• Fuel and layout: petrol inline-3
• Fitted to: 7 BMW models across 6 chassis generations
• In our stock now: 170 units from 901,00 € — browse all B38 engines

The B38 at a glance

The table lists every B38 version we supply with its capacity, layout, output and production years. Use it with your car's engine code to find the right unit.

Across 3 versions, output runs from 136 to 140 hp. The spread reflects different capacities, tuning for different markets and the technical updates BMW made over 13 years of production.

History of the B38

BMW launched the B38 in 2014 as part of its modular B-series. It shares many parts with the B48 and B58. It is built in front-drive and rear-drive versions.

2014: the B38B15 arrived with 1.5 L and 136 hp in the BMW F40 118i, BMW F45 218i and BMW G20 318i.

2014: the B38A15 arrived with 1.5 L and 136 hp in the MINI F56 Cooper, BMW F40 118i and BMW F45 218i. It matched the B38B15 for power.

2015: the B38B15A arrived with 1.5 L and 140 hp in the BMW F48 X1 18i and BMW F39 X2 18i. Compared with the B38A15, it added 4 hp.

Every B38 version explained

B38B15 (1.5 L, 136 hp)

B38B15: 1.5 L, inline-3, petrol, turbocharged. Output is 136 hp with 220 Nm of torque, and production ran from 2014 to 2026. That is about 91 hp and 147 Nm per litre, a strong figure for a road engine of its era. Within the B38 family, the B38B15A (140 hp) is more powerful. It was fitted to the BMW F40 118i, BMW F45 218i, BMW G20 318i and MINI F56 Mini Cooper. See every B38B15 in stock.

Reading the code: B marks a B-series code, BMW's modular engine family introduced from 2013 with 500 cc per cylinder; 38 is the family number; B stands for petrol, longitudinal installation for rear-drive and xDrive cars; 15 is the capacity in decilitres, so 1.5 litres.

We have 23 B38B15 units in stock, priced from 901,00 € to 4.236,00 €.

B38A15 (1.5 L, 136 hp)

The B38A15 is a 1.5 L inline-3 petrol engine, turbocharged, rated at 136 hp and 220 Nm. BMW built it from 2014 to 2024. That is about 91 hp and 147 Nm per litre, a strong figure for a road engine of its era. Within the B38 family, the B38B15A (140 hp) is more powerful. It was fitted to the MINI F56 Cooper, BMW F40 118i and BMW F45 218i. See every B38A15 in stock.

Reading the code: B marks a B-series code, BMW's modular engine family introduced from 2013 with 500 cc per cylinder; 38 is the family number; A stands for petrol, transverse installation for front-drive cars; 15 is the capacity in decilitres, so 1.5 litres.

We have 143 B38A15 units in stock, priced from 929,00 € to 3.389,00 €.

B38B15A (1.5 L, 140 hp)

Built from 2015 to 2024, the B38B15A displaces 1.5 L in an inline-3 layout and is turbocharged. It produces 140 hp and 220 Nm on petrol. That is about 93 hp and 147 Nm per litre, a strong figure for a road engine of its era. Within the B38 family, it is the most powerful version, while the B38B15 (136 hp) and B38A15 (136 hp) are milder. It was fitted to the BMW F48 X1 18i and BMW F39 X2 18i. See every B38B15A in stock.

Reading the code: B marks a B-series code, BMW's modular engine family introduced from 2013 with 500 cc per cylinder; 38 is the family number; B stands for petrol, longitudinal installation for rear-drive and xDrive cars; 15 is the capacity in decilitres, so 1.5 litres; A identifies the version or output stage.

We have 18 B38B15A units in stock, priced from 901,00 € to 4.236,00 €.

Which cars use the B38

The B38 was fitted to 7 models. The list below is grouped by chassis generation so you can find your car quickly. Always confirm the exact code with your VIN, because BMW often used more than one engine in the same model.

BMW F40 third 1 Series (2019–)

In the third 1 Series, built 2019– as a hatchback, the B38 powered the 118i (B38B15, 136 hp) and 118i (B38A15, 136 hp).

For an F40, confirm the production date as well as the model: BMW often changed engine versions at the mid-life update. We currently have 37 B38 units from F40 donor cars. All F40 engines in stock.

The 118i uses the B38B15. BMW 118i engines for sale.

The 118i uses the B38A15. BMW 118i engines for sale.

BMW F45 2 Series Active Tourer (2014–2021)

In the 2 Series Active Tourer, built 2014–2021 as an MPV, the B38 powered the 218i (B38B15, 136 hp) and 218i (B38A15, 136 hp).

For an F45, confirm the production date as well as the model: BMW often changed engine versions at the mid-life update. We currently have 38 B38 units from F45 donor cars. All F45 engines in stock.

The 218i uses the B38B15. BMW 218i engines for sale.

The 218i uses the B38A15. BMW 218i engines for sale.

BMW G20 seventh 3 Series (2018–)

In the seventh 3 Series, built 2018– as a saloon, the B38 powered the 318i (B38B15, 136 hp).

When ordering for a G20, check whether the car is rear-drive or xDrive and whether it has a manual or automatic gearbox, because the sump and flywheel can differ. All G20 engines in stock.

The 318i uses the B38B15. BMW 318i engines for sale.

MINI F56 third-generation MINI hatch (2014–2024)

In the third-generation MINI hatch, built 2014–2024 as a hatchback, the B38 powered the Mini Cooper (B38B15, 136 hp) and Cooper (B38A15, 136 hp).

When ordering for an F56, check whether the car is front-drive or ALL4 and whether it has a manual or automatic gearbox, because the sump and flywheel can differ. We currently have 36 B38 units from F56 donor cars.

BMW F48 second X1 (2015–2022)

In the second X1, built 2015–2022 as an SAV, the B38 powered the X1 18i (B38B15A, 140 hp).

For an F48, confirm the production date as well as the model: BMW often changed engine versions at the mid-life update. We currently have 4 B38 units from F48 donor cars. All F48 engines in stock.

The X1 18i uses the B38B15A. BMW X1 engines for sale.

BMW F39 first X2 (2017–2023)

In the first X2, built 2017–2023 as an SAC, the B38 powered the X2 18i (B38B15A, 140 hp).

When ordering for an F39, check whether the car is front-drive or xDrive and whether it has a manual or automatic gearbox, because the sump and flywheel can differ. We currently have 6 B38 units from F39 donor cars. All F39 engines in stock.

The X2 18i uses the B38B15A. BMW X2 engines for sale.

Will a B38 fit my BMW? Model-by-model answers

Short answers for every model that left the factory with a B38, with prices from our current stock.

Will the B38B15 fit my BMW F40 118i?

For the BMW F40 118i, the B38B15 is the factory engine and the one to order. The third 1 Series was built 2019–, and the B38B15 was produced 2014–2026, so check that your car's build date falls inside that window. Confirm the drive type (front-drive or xDrive), the gearbox (manual or automatic) and the emissions standard, because these can change the sump, the flywheel and the software. Send us the VIN and we check all of it for you.

How much is a replacement engine for a BMW F40 118i?

We have 3 B38B15 engines from F40 donor cars, priced from 1.171,00 € to 3.055,00 €. Delivery to your door is included, and the engine carries a 12-month warranty when fitted by a qualified workshop. Add fitting labour and the parts you replace at the same time — seals, cooling parts and mounts — to estimate the total.

Will the B38B15 fit my BMW F45 218i?

The B38B15 is the original engine for the BMW F45 218i, which makes it the straightforward choice. The 2 Series Active Tourer was built 2014–2021, and the B38B15 was produced 2014–2026, so check that your car's build date falls inside that window. Confirm the drive type (front-drive or xDrive), the gearbox (manual or automatic) and the emissions standard, because these can change the sump, the flywheel and the software. Send us the VIN and we check all of it for you.

How much is a replacement engine for a BMW F45 218i?

We have 3 B38B15 engines from F45 donor cars, priced from 901,00 € to 4.236,00 €. Delivery to your door is included, and the engine carries a 12-month warranty when fitted by a qualified workshop. Add fitting labour and the parts you replace at the same time — seals, cooling parts and mounts — to estimate the total.

Will the B38B15 fit my BMW G20 318i?

Yes, the BMW G20 318i left the factory with the B38B15, so a B38B15 from another car is the direct replacement. The seventh 3 Series was built 2018–, and the B38B15 was produced 2014–2026, so check that your car's build date falls inside that window. Confirm the drive type (rear-drive or xDrive), the gearbox (manual or automatic) and the emissions standard, because these can change the sump, the flywheel and the software. Send us the VIN and we check all of it for you.

How much is a replacement engine for a BMW G20 318i?

We have 23 B38B15 engines in stock, priced from 901,00 € to 4.236,00 €. Delivery to your door is included, and the engine carries a 12-month warranty when fitted by a qualified workshop. Add fitting labour and the parts you replace at the same time — seals, cooling parts and mounts — to estimate the total.

Will the B38B15 fit my MINI F56 Mini Cooper?

For the MINI F56 Mini Cooper, the B38B15 is the factory engine and the one to order. The third-generation MINI hatch was built 2014–2024, and the B38B15 was produced 2014–2026, so check that your car's build date falls inside that window. Confirm the drive type (front-drive or ALL4), the gearbox (manual or automatic) and the emissions standard, because these can change the sump, the flywheel and the software. Send us the VIN and we check all of it for you.

How much is a replacement engine for an MINI F56 Mini Cooper?

We have 23 B38B15 engines in stock, priced from 901,00 € to 4.236,00 €. Delivery to your door is included, and the engine carries a 12-month warranty when fitted by a qualified workshop. Add fitting labour and the parts you replace at the same time — seals, cooling parts and mounts — to estimate the total.

Will the B38A15 fit my MINI F56 Cooper?

Yes, the MINI F56 Cooper left the factory with the B38A15, so a B38A15 from another car is the direct replacement. The third-generation MINI hatch was built 2014–2024, and the B38A15 was produced 2014–2024, so check that your car's build date falls inside that window. Confirm the drive type (front-drive or ALL4), the gearbox (manual or automatic) and the emissions standard, because these can change the sump, the flywheel and the software. Send us the VIN and we check all of it for you.

How much is a replacement engine for an MINI F56 Cooper?

We have 35 B38A15 engines from F56 donor cars, priced from 1.017,00 € to 2.433,00 €. Delivery to your door is included, and the engine carries a 12-month warranty when fitted by a qualified workshop. Add fitting labour and the parts you replace at the same time — seals, cooling parts and mounts — to estimate the total.

Will the B38B15A fit my BMW F48 X1 18i?

Yes, the BMW F48 X1 18i left the factory with the B38B15A, so a B38B15A from another car is the direct replacement. The second X1 was built 2015–2022, and the B38B15A was produced 2015–2024, so check that your car's build date falls inside that window. Confirm the drive type (front-drive or xDrive), the gearbox (manual or automatic) and the emissions standard, because these can change the sump, the flywheel and the software. Send us the VIN and we check all of it for you.

How much is a replacement engine for a BMW F48 X1 18i?

We have 2 B38B15A engines from F48 donor cars, priced from 1.343,00 € to 2.707,00 €. Delivery to your door is included, and the engine carries a 12-month warranty when fitted by a qualified workshop. Add fitting labour and the parts you replace at the same time — seals, cooling parts and mounts — to estimate the total.

Will the B38B15A fit my BMW F39 X2 18i?

Yes, the BMW F39 X2 18i left the factory with the B38B15A, so a B38B15A from another car is the direct replacement. The first X2 was built 2017–2023, and the B38B15A was produced 2015–2024, so check that your car's build date falls inside that window. Confirm the drive type (front-drive or xDrive), the gearbox (manual or automatic) and the emissions standard, because these can change the sump, the flywheel and the software. Send us the VIN and we check all of it for you.

How much is a replacement engine for a BMW F39 X2 18i?

We have 3 B38B15A engines from F39 donor cars, priced from 1.352,00 € to 3.204,00 €. Delivery to your door is included, and the engine carries a 12-month warranty when fitted by a qualified workshop. Add fitting labour and the parts you replace at the same time — seals, cooling parts and mounts — to estimate the total.

B38 model-year guide

Use this year-by-year guide to see which B38 versions were in production when your car was built.

2014 — B38B15 and B38A15 were in production. New this year: B38B15 and B38A15.

2015 — B38B15, B38A15 and B38B15A were in production. New this year: B38B15A.

2016 — B38B15, B38A15 and B38B15A were in production.

2017 — B38B15, B38A15 and B38B15A were in production.

2018 — B38B15, B38A15 and B38B15A were in production.

2019 — B38B15, B38A15 and B38B15A were in production.

2020 — B38B15, B38A15 and B38B15A were in production.

2021 — B38B15, B38A15 and B38B15A were in production.

2022 — B38B15, B38A15 and B38B15A were in production.

2023 — B38B15, B38A15 and B38B15A were in production.

2024 — B38B15, B38A15 and B38B15A were in production. Last year for B38A15 and B38B15A.

2025 — B38B15 was in production.

2026 — B38B15 was in production. Last year for B38B15.

Common B38 problems and what to check

No engine is perfect. These are the faults our workshop sees most often on the B38, what causes them and how to check a used unit before you buy.

Coolant leaks

Thermostat housings and coolant pipes leak.

How to check: Check for coolant loss.

Ignition coils

Coils fail and cause misfires.

How to check: Read misfire counters.

Engine mounts

Three-cylinder vibration finishes mounts.

How to check: Check mounts in the car.

Carbon build-up

Intake valves carbon up over time.

How to check: Borescope inspection.

Diagnosing a failing B38: symptoms and causes

If your current engine is showing one of these symptoms, this table helps you judge whether it can be repaired or whether a replacement B38 is the better route.

Knocking from the bottom of the engine. A deep knock that rises with engine speed usually means worn rod or main bearings. Stop driving: bearing failure ends with a broken connecting rod. A used engine is normally the most economical fix once the bottom end is damaged.

Overheating or losing coolant. Coolant loss without visible leaks points to a head gasket or a cracked head; visible leaks point to the water pump, hoses, thermostat housing or expansion tank. Overheating should be fixed before it warps the head.

White smoke that smells sweet. Coolant burning in the cylinders, from a head gasket, a cracked head or, on diesels, a leaking EGR cooler. Check the coolant level and look for oil in the coolant.

Blue smoke. Oil burning in the cylinders. A puff on start-up points to valve stem seals; constant smoke under load points to piston rings or, on turbo engines, turbo seals.

Rough idle or misfire. Ignition coils, spark plugs, injectors and vacuum leaks are the usual causes. A misfire on one cylinder that moves when you swap coils is a coil; one that stays is a plug, injector or compression problem.

Loss of power. Start with the simple things: air filter, boost leaks on turbo engines, fuel pressure and fault codes. A gradual loss with poor compression on a test points to internal wear.

Rattle for a few seconds after a cold start. The classic sign of a weak timing chain tensioner or stretched chain. It must be checked quickly: a chain that jumps a tooth can bend valves.

Rattle or whine from the gearbox end. On engines with the timing chain at the rear, a rattle or whine from the back of the engine is the warning sign of chain stretch or guide wear.

Whistle, loss of boost or limp mode. A split charge pipe, a sticking wastegate or worn turbo bearings. Check the pipes first, then the turbo shaft for play.

Poor low-down torque and uneven idle. VANOS seals or solenoids. The engine may run well at high revs but feel flat and lumpy at low speed.

Limp mode with a Valvetronic fault. The Valvetronic motor, its eccentric shaft sensor or the wiring. The engine runs on a reduced throttle until it is repaired.

Long cranking before the engine starts. On direct-injection engines, a weak high-pressure fuel pump or leaking injector lets pressure drop when the engine is off.

Repair or replace your B38?

As a rule, bolt-on faults are worth repairing and internal damage is not. Seals, sensors, coils, injectors, pumps and turbos can be replaced in the car. Once the bearings, crankshaft, bores or head of a B38 are damaged, a used engine is usually cheaper and quicker than a rebuild.

Timing chain work on the B38 needs the engine removed. When the chain has failed and damaged valves or pistons, a replacement engine with a sound chain is often the same price as the repair.

Ask your workshop for a written diagnosis before deciding. A compression test, an oil analysis and a borescope inspection take an hour or two and remove most of the guesswork.

B38 maintenance and running costs

Front-drive (B38A) and rear-drive (B38B) versions are not interchangeable without changes.

Shorter oil intervals than the factory maximum are the cheapest insurance for a B38. Most of the expensive faults on BMW engines start with tired oil.

Let a turbocharged engine idle for thirty seconds after hard driving so the turbo can cool, and warm it up gently before using full boost.

Buying a used B38: the full checklist

Work through these points before you order a used B38, whoever you buy from.

1. Confirm the exact engine code. Read the code stamped on the block and compare it with the code for your car. Send us the last seven characters of the VIN and we confirm the match before anything is paid.
2. Ask how the donor car was damaged. Most good used engines come from cars with body damage. A front-end impact can crack sensors, the timing cover or the sump; a rear or side impact usually leaves the engine untouched. The yard records the damage on each unit.
3. Compression or leak-down figures. Even compression across all cylinders tells you more than mileage. Ask for the figures, not just a pass or fail, and compare the highest and lowest readings: a spread above 10 to 15 percent deserves a question.
4. Look at the oil and coolant. Clean oil without metal particles and coolant without oil are good signs. Milky oil, oily coolant or a burnt smell mean the engine needs further checks before it is fitted.
5. Photographs from every side. Good suppliers photograph the actual engine you will receive. Look for the block stamp, the sump, the timing cover and any broken brackets or connectors in the pictures.
6. List of what is fitted. Engines are sold with different ancillaries: some have the turbo, injectors, manifolds, alternator and starter, others are long blocks. Agree the list in writing so you know which parts must come from your old engine.
7. Sump, oil pickup and drive variants. Rear-drive, xDrive and front-drive cars can use different sumps, oil pickups and engine mounts even with the same engine code. Check that the sump matches your subframe and front axle.
8. Gearbox and flywheel match. Manual and automatic engines differ at the flywheel or flexplate, and sometimes at the crankshaft spigot. Make sure the engine you buy matches your gearbox or that you transfer the right parts.
9. Warranty terms in writing. Read what the warranty covers, how long it runs and what fitting conditions apply. Most warranties require a qualified workshop, new fluids and filters, and replacement of the cooling parts that caused the original failure.
10. Why your old engine failed. Before fitting a replacement, find out why the original failed. An overheating radiator, a blocked intercooler or a failed turbo can destroy a second engine if they are not fixed.
11. Turbocharger shaft play and oil. Rotate the compressor wheel by hand. A small amount of side play is normal; in-and-out play or wheel contact with the housing is not. Oil pooled in the intake or intercooler pipes points to worn seals.
12. Timing chain noise. Listen for a rattle at the front of the engine for the first seconds after a cold start. On an engine that cannot be run, look at the chain guides through the oil filler or with the valve cover off.
13. Gearbox-end timing chain. On this engine the timing chain sits at the gearbox end, so replacing it normally means removing the engine. If the chain has not been replaced, the time to do it is before the engine goes into your car.
14. VANOS operation. Rough idle, a rattle from the front of the head and a loss of torque at low revs point to VANOS seals or solenoids. These are serviceable parts and are easier to renew with the engine out.
15. Double VANOS units and solenoids. Ask for the adaptation values or fault history if the engine was running. Solenoids are inexpensive and are often replaced as a matter of course on a used engine.
16. Valvetronic motor and eccentric shaft sensor. The Valvetronic motor and its sensor cause limp-mode faults when they fail. Inspect the connector and the seal around the motor for oil.
17. Injectors and high-pressure fuel pump. Direct-injection engines rely on high-pressure pumps and precise injectors. Ask whether the injectors are original or updated and whether there were fuel pressure faults.

B38 prices: what you should pay

We currently hold 170 B38 engines. The cheapest is 901,00 €, the most expensive 4.236,00 €, and half of them cost less than 1.724,00 €.

Prices depend on the exact version, the donor's mileage, how complete the engine is and the demand for that code. Higher-output versions, low mileage and dressed engines with turbo, injectors and ancillaries cost more; long blocks and higher mileage cost less.

B38 prices by model year

Engines from 2005–2009 have a median of 2.574,00 €, while units from 2020–2024 sit at 1.771,00 €. Newer engines usually cost more because they come from younger donor cars with lower mileage and later updates.

B38 prices by mileage

Mileage matters less than history on a well-maintained BMW engine, but it is a useful guide. A low-mileage unit from a younger car gives you more life for a modest premium.

B38 engines in stock now

Here is a selection of B38 engines currently on our shelves, photographed in the yard. Click any of them for the full photographs, mileage and specification.

BMW F56 Mini Cooper B38A15 Engine 2021, 45,700 km1.728,00 €BMW F40 118i B38A15 Engine 2020, 118,200 km1.423,00 €BMW F45 218i B38A15 Engine 2014, 169,300 km2.053,00 €BMW F40 118i B38A15 Engine 2021, 175,200 km1.757,00 €BMW F45 218i B38A15 Engine 2019, 25,300 km1.318,00 €BMW F20 118i B38A15 Engine 2021, 146,100 km1.514,00 €BMW F45 218i B38A15 Engine 2017, 177,400 km1.916,00 €BMW F56 Mini Cooper B38A15 Engine 2018, 183,500 km1.465,00 €BMW F40 118i B38A15 Engine 2016, 161,000 km1.430,00 €BMW F20 118i B38A15 Engine 2020, 34,800 km1.372,00 €BMW F45 218i B38A15 Engine 2018, 29,000 km1.984,00 €BMW F45 218i B38A15 Engine 2022, 71,700 km1.819,00 €

BMW F56 Mini Cooper B38A15 Engine 2021, 45,700 km — 1.728,00 €, reduced from 2.950,00 €. It comes from a 2021 donor car with 45,700 km, and 23 units are available. We can confirm fitment against your VIN the same day.

BMW F40 118i B38A15 Engine 2020, 118,200 km — 1.423,00 €, reduced from 2.350,00 €. It comes from a 2020 donor car with 118,200 km, and 23 units are available. The listing shows every side of the engine and the fitted parts.

BMW F45 218i B38A15 Engine 2014, 169,300 km — 2.053,00 €, reduced from 3.250,00 €. It comes from a 2014 donor car with 169,300 km, and 29 units are available. We can confirm fitment against your VIN the same day.

BMW F40 118i B38A15 Engine 2021, 175,200 km — 1.757,00 €, reduced from 2.850,00 €. It comes from a 2021 donor car with 175,200 km, and 15 units are available. We can confirm fitment against your VIN the same day.

BMW F45 218i B38A15 Engine 2019, 25,300 km — 1.318,00 €, reduced from 2.300,00 €. It comes from a 2019 donor car with 25,300 km, and 29 units are available. The listing shows every side of the engine and the fitted parts.

BMW F20 118i B38A15 Engine 2021, 146,100 km — 1.514,00 €, reduced from 2.800,00 €. It comes from a 2021 donor car with 146,100 km, and 22 units are available. The listing shows every side of the engine and the fitted parts.

BMW F45 218i B38A15 Engine 2017, 177,400 km — 1.916,00 €, reduced from 3.100,00 €. It comes from a 2017 donor car with 177,400 km, and 5 units are available. We can confirm fitment against your VIN the same day.

BMW F56 Mini Cooper B38A15 Engine 2018, 183,500 km — 1.465,00 €, reduced from 2.700,00 €. It comes from a 2018 donor car with 183,500 km, and 6 units are available. Ask the desk for compression figures or extra photographs before you order.

BMW F40 118i B38A15 Engine 2016, 161,000 km — 1.430,00 €, reduced from 2.750,00 €. It comes from a 2016 donor car with 161,000 km, and 7 units are available. We can confirm fitment against your VIN the same day.

BMW F20 118i B38A15 Engine 2020, 34,800 km — 1.372,00 €, reduced from 2.100,00 €. It comes from a 2020 donor car with 34,800 km, and 18 units are available. We can confirm fitment against your VIN the same day.

BMW F45 218i B38A15 Engine 2018, 29,000 km — 1.984,00 €, reduced from 2.950,00 €. It comes from a 2018 donor car with 29,000 km, and 18 units are available. Ask the desk for compression figures or extra photographs before you order.

BMW F45 218i B38A15 Engine 2022, 71,700 km — 1.819,00 €, reduced from 3.250,00 €. It comes from a 2022 donor car with 71,700 km, and 26 units are available. The listing shows every side of the engine and the fitted parts.

Fitting a replacement B38

These are the steps we recommend to every workshop fitting one of our B38 engines.

1. Compare the engines side by side. Put the replacement next to the old engine and compare sensors, brackets, connectors, the sump, the starter and the flywheel or flexplate. Note anything that must be transferred.
2. Transfer the parts that differ. Move the parts that are specific to your car, such as the engine harness on some models, the sump on xDrive cars or the air conditioning compressor bracket. Use new seals and gaskets for everything you move.
3. Replace the rear main seal and drive parts. With the engine out, the rear crankshaft seal is easy to reach. Fit a new one, inspect the flywheel and clutch on manual cars or the converter seal on automatics.
4. Renew the cooling system. Most engine failures start with cooling. Fit a new water pump, thermostat and hoses, check the radiator and fan, and use the correct coolant.
5. Fit new engine mounts. Old mounts transfer vibration and can let the engine move enough to damage hoses. They are cheap and easy to replace with the engine out.
6. Inspect or replace the timing chain parts. Look at the guides and tensioner. On high-mileage engines, replacing them now costs far less than doing it later.
7. Replace the rear timing chain if in doubt. On engines with the chain at the gearbox end, chain work needs the engine out. If the history is unknown, replace the chain, guides and tensioner before fitting.
8. Prepare the turbo. Fit new oil feed and return seals, clean the intercooler and pipes of any oil or debris from the old engine, and prime the turbo with oil before starting.
9. Clean the intake. If the old engine failed internally, debris can be in the intake or intercooler. Clean them so nothing reaches the new engine.
10. Fill with the right oil and prime it. Fill with new oil of the correct specification and a new filter. Crank with the fuel and ignition disabled until oil pressure builds.
11. Coding and adaptations. On modern BMWs, the engine ECU must be matched to the car's immobiliser (CAS, FEM or BDC). Reset adaptations, register the battery and clear faults with diagnostic software.
12. Reset VANOS adaptations. Clear the VANOS adaptations so the ECU learns the camshaft positions of the new engine.
13. Teach the Valvetronic limit stops. Run the Valvetronic learning routine so the ECU knows the eccentric shaft limits.
14. First start and leak check. Start the engine, let it idle and watch oil pressure, temperature and fault codes. Check for leaks and bleed the cooling system.
15. First 1,000 km. Drive gently for the first few hundred kilometres, vary the engine speed and avoid full load. Change the oil and filter after about 1,000 km to remove any assembly debris.

Tuning and upgrades

Remaps add modest gains.

Whatever you plan, start with a healthy engine: a compression test, fresh fluids and the known weak parts replaced. Power upgrades amplify any existing problem.

B38 compared with similar BMW engines

Buyers often compare the B38 with these engines. Here is how they line up.

The N13 is milder (up to 136 hp against 140 hp) and uses timing chain at the front. Its best-known faults are timing chain stretch and carbon build-up. Read the N13 guide.

The MINI Prince reaches higher outputs (up to 184 hp against 140 hp) and uses timing chain at the front. Its best-known faults are timing chain and carbon build-up. Read the MINI Prince guide.

The M40 is milder (up to 113 hp against 140 hp) and uses rubber timing belt with tensioner, changed on time. Its best-known faults are timing belt and camshaft lobe wear. Read the M40 guide.

Delivery, warranty and payment

Before a B38 engine leaves our Hamburg yard it is drained of oil and coolant, every opening is sealed, and it is strapped to a pallet and wrapped. We send photographs of the packed unit and the tracking details.

Delivery is door to door and included in the price. Most European addresses receive the engine within five to ten working days; Germany and its neighbours are usually faster.

Every engine carries a 12-month warranty on eligible internal failure when a qualified workshop fits it with new fluids and filters. Payment is by card, bank transfer or crypto; your invoice is emailed as soon as you order.

We deliver B38 engines from Hamburg to customers across Europe and beyond. Typical door-to-door times and customs status:

Times are typical for pallet delivery after dispatch and can vary with holidays and remote addresses. Business buyers in the EU with a valid VAT number can order without German VAT.

Questions buyers ask about the B38

Will the B38A15 engine fit my BMW F20 118i?

Yes, if your BMW F20 118i was built with the B38A15. BMW used this 1.5 liter (1,499 cc) petrol engine with 100 kW (136 HP) in the F20 118i from about 2014 to 2024.

In our records the B38A15 is the engine for the F20 118i, which makes the match simple. Still, check the code on your old engine or send us your VIN.

Also tell us if your F20 has a manual or an automatic gearbox. The flywheel or the flex plate and some sensors depend on it.

Not sure? Send us your VIN and your gearbox code. We match the engine family, the year window and the parts on the engine before anything is reserved, and the check is free.

See all B38 Engines · Search B38A15 in the shop

How much is a replacement B38A15 engine for a BMW F20 118i?

A used B38A15 for the BMW F20 118i costs from about 1.250 € to 2.100 € in our yard. The price depends on the year, the mileage and the parts that come with the engine.

Shipping is a flat 249 € per order. It is added once at checkout and printed on the invoice, so there is no extra fee later. Inside the EU there is no import duty. Outside the EU, the receiver pays local duty and VAT.

A replacement engine is often much cheaper than rebuilding a damaged one, and much faster. The B38A15 you buy is photographed and checked in Hamburg before it is listed.

Eligible engines come with a 12 months warranty from the delivery date. It covers internal mechanical failure under normal use and correct fitting by a qualified mechanic or workshop. Not sure? Send us your VIN and your gearbox code. We match the engine family, the year window and the parts on the engine before anything is reserved, and the check is free.

See all B38 Engines · Search B38A15 in the shop

Will the B38A15 engine fit my BMW F40 118i?

Yes, if your BMW F40 118i was built with the B38A15. BMW used this 1.5 liter (1,499 cc) petrol engine with 100 kW (136 HP) in the F40 118i from about 2014 to 2024.

In our records the B38A15 is the engine for the F40 118i, which makes the match simple. Still, check the code on your old engine or send us your VIN.

Also tell us if your F40 has a manual or an automatic gearbox. The flywheel or the flex plate and some sensors depend on it.

Not sure? Send us your VIN and your gearbox code. We match the engine family, the year window and the parts on the engine before anything is reserved, and the check is free.

See all B38 Engines · Search B38A15 in the shop

How much is a replacement B38A15 engine for a BMW F40 118i?

A used B38A15 for the BMW F40 118i costs from about 1.250 € to 2.100 € in our yard. The price depends on the year, the mileage and the parts that come with the engine.

Shipping is a flat 249 € per order. It is added once at checkout and printed on the invoice, so there is no extra fee later. Inside the EU there is no import duty. Outside the EU, the receiver pays local duty and VAT.

A replacement engine is often much cheaper than rebuilding a damaged one, and much faster. The B38A15 you buy is photographed and checked in Hamburg before it is listed.

Eligible engines come with a 12 months warranty from the delivery date. It covers internal mechanical failure under normal use and correct fitting by a qualified mechanic or workshop. Not sure? Send us your VIN and your gearbox code. We match the engine family, the year window and the parts on the engine before anything is reserved, and the check is free.

See all B38 Engines · Search B38A15 in the shop

Will the B38A15 engine fit my BMW F45 218i?

Yes, if your BMW F45 218i was built with the B38A15. BMW used this 1.5 liter (1,499 cc) petrol engine with 100 kW (136 HP) in the F45 218i from about 2014 to 2024.

In our records the B38A15 is the engine for the F45 218i, which makes the match simple. Still, check the code on your old engine or send us your VIN.

Also tell us if your F45 has a manual or an automatic gearbox. The flywheel or the flex plate and some sensors depend on it.

Not sure? Send us your VIN and your gearbox code. We match the engine family, the year window and the parts on the engine before anything is reserved, and the check is free.

See all B38 Engines · Search B38A15 in the shop

How much is a replacement B38A15 engine for a BMW F45 218i?

A used B38A15 for the BMW F45 218i costs from about 1.250 € to 2.100 € in our yard. The price depends on the year, the mileage and the parts that come with the engine.

Shipping is a flat 249 € per order. It is added once at checkout and printed on the invoice, so there is no extra fee later. Inside the EU there is no import duty. Outside the EU, the receiver pays local duty and VAT.

A replacement engine is often much cheaper than rebuilding a damaged one, and much faster. The B38A15 you buy is photographed and checked in Hamburg before it is listed.

Eligible engines come with a 12 months warranty from the delivery date. It covers internal mechanical failure under normal use and correct fitting by a qualified mechanic or workshop. Not sure? Send us your VIN and your gearbox code. We match the engine family, the year window and the parts on the engine before anything is reserved, and the check is free.

See all B38 Engines · Search B38A15 in the shop

Will the B38A15 engine fit my BMW F48 X1 sDrive18i?

Yes, if your BMW F48 X1 sDrive18i was built with the B38A15. BMW used this 1.5 liter (1,499 cc) petrol engine with 100 kW (136 HP) in the F48 X1 sDrive18i from about 2014 to 2024.

In our records the B38A15 is the engine for the F48 X1 sDrive18i, which makes the match simple. Still, check the code on your old engine or send us your VIN.

Your car has all-wheel drive or is an X model, so the sump, the oil pickup and some brackets can differ from the rear-drive cars. Tell us the full model so we send the right set-up.

Not sure? Send us your VIN and your gearbox code. We match the engine family, the year window and the parts on the engine before anything is reserved, and the check is free.

See all B38 Engines · Search B38A15 in the shop

How much is a replacement B38A15 engine for a BMW F48 X1 sDrive18i?

A used B38A15 for the BMW F48 X1 sDrive18i costs from about 1.250 € to 2.100 € in our yard. The price depends on the year, the mileage and the parts that come with the engine.

Shipping is a flat 249 € per order. It is added once at checkout and printed on the invoice, so there is no extra fee later. Inside the EU there is no import duty. Outside the EU, the receiver pays local duty and VAT.

A replacement engine is often much cheaper than rebuilding a damaged one, and much faster. The B38A15 you buy is photographed and checked in Hamburg before it is listed.

Eligible engines come with a 12 months warranty from the delivery date. It covers internal mechanical failure under normal use and correct fitting by a qualified mechanic or workshop. Not sure? Send us your VIN and your gearbox code. We match the engine family, the year window and the parts on the engine before anything is reserved, and the check is free.

See all B38 Engines · Search B38A15 in the shop

What is the BMW B38A15 engine?

The BMW B38A15 is a 1.5 liter (1,499 cc) petrol engine from the B38 family. It has an inline 3, DOHC, 12 valve layout with a single turbocharger, and makes 100 kW (136 HP) with 220 Nm of torque. BMW built it from 2014 to 2024 and it meets the Euro 6 emission standard.

You find the B38A15 in the BMW F20 118i, BMW F40 118i, BMW F45 218i and BMW F48 X1 sDrive18i. What we list: BMW B38 1.5 three-cylinder turbo petrol engines for 118i and 218i.

At Autowerke Engines every B38A15 is a real used engine from our yard in Hamburg. Each engine in the yard is inspected in Hamburg. The code is matched to the listing, the parts on the engine are recorded, the openings are sealed and the real unit is photographed. Each listing shows the year, the mileage and the price, so you can compare units side by side.

Not sure? Send us your VIN and your gearbox code. We match the engine family, the year window and the parts on the engine before anything is reserved, and the check is free.

See all B38 Engines · Search B38A15 in the shop

How much does a used BMW B38A15 engine cost?

A used BMW B38A15 engine in our yard usually costs between 1.250 € and 2.100 €. The exact price depends on the year, the mileage and the parts that come with the engine.

Our units show recorded mileage from about 22,000 km up to around 200,000 km. Lower mileage and more ancillaries mean a higher price. Each listing shows its own price, and the price you see is the price you pay. Prices include VAT for private buyers.

Shipping is a flat 249 € per order. It is added once at checkout and printed on the invoice, so there is no extra fee later. If you order a gearbox or a second engine on the same order, the fee is still charged once.

Inside the EU there is no import duty. For the UK and other non-EU countries, import duty and local VAT are paid by the receiver, and we supply a commercial invoice.

See all B38 Engines · Search B38A15 in the shop

Which cars use the BMW B38A15 engine?

BMW fitted the B38A15 to the BMW F20 118i, BMW F40 118i, BMW F45 218i and BMW F48 X1 sDrive18i. These cars were built with this engine from about 2014 to 2024.

The badge on the boot is not enough to be sure. The same model name can hide two different engines, for example after a facelift or a change in emission rules. Always read the engine code stamped on the block, or look it up with your VIN.

The B38A15 is the only B38 version we list, which makes it easy to pick, but the wiring and the engine computer still need to match your car.

Not sure? Send us your VIN and your gearbox code. We match the engine family, the year window and the parts on the engine before anything is reserved, and the check is free.

See all B38 Engines · Search B38A15 in the shop

How much power and torque does the BMW B38A15 have?

From the factory the BMW B38A15 makes 100 kW (136 HP) and 220 Nm of torque. It is a 1.5 liter (1,499 cc) inline 3, DOHC, 12 valve petrol engine with a single turbocharger.

Because it is turbocharged, the torque comes in low in the rev range, which makes the car feel strong in everyday driving. A healthy turbo, a clean intercooler and tight boost pipes are key to getting the full figure.

A used engine reaches its factory numbers when it is fitted with the matching engine computer and software, and serviced with the right oil and filters. If the engine computer from your car is a different version, a specialist may need to code it.

Every B38A15 on our site lists its year and mileage. Ask the desk for more pictures of any listing. We are happy to show the stamp, the ports and the ancillaries before you decide.

See all B38 Engines · Search B38A15 in the shop

How do I know a used B38A15 engine is in good shape?

Before a unit is listed, the yard checks the engine code against the listing, writes down the parts fitted to it, seals every opening and photographs the real engine you will receive. An inspection certificate for the unit can travel with the order when you ask for it.

When you look at a listing, check the recorded mileage, the year and the photos of the ports and the stamp. Ask for photos of anything you want to see closer. Ask the desk for more pictures of any listing. We are happy to show the stamp, the ports and the ancillaries before you decide.

On a petrol engine like the B38A15, a careful fitter will also look at the spark plugs, the coils and the timing side before the engine goes in.

If the engine fails inside under normal use, the warranty covers you. Eligible engines come with a 12 months warranty from the delivery date. It covers internal mechanical failure under normal use and correct fitting by a qualified mechanic or workshop.

See all B38 Engines · Search B38A15 in the shop

What comes with a used B38A15 engine?

Each B38A15 is sold as described on its own listing. The yard writes down the parts that are fitted to that unit, such as the turbo, the injectors, the manifolds or the alternator, so you know what arrives.

Some units are long engines with few ancillaries, others are more complete. If you need a part that is not listed, ask the desk. We often have the matching items in the yard.

Every engine is drained, sealed at each opening, strapped to a heat-treated pallet and shrink-wrapped, then photographed before it leaves the yard.

On delivery, the carrier brings the pallet to the kerb or a loading bay. Please have a forklift, a pallet truck or an engine crane ready.

See all B38 Engines · Search B38A15 in the shop

Is the BMW B38A15 a diesel or petrol engine?

The B38A15 is a petrol engine. It is a 1.5 liter (1,499 cc) inline 3, DOHC, 12 valve unit with a single turbocharger, and it was built to the Euro 6 emission standard.

The emission standard matters for registration and for low-emission zones in many cities. When you replace an engine with the same code, the car keeps the same paperwork and the same emission class.

Petrol versions need the correct catalytic converters and oxygen sensors on the car to stay legal and to keep the engine computer happy. Reuse the parts from your car if they are in good condition.

If you are not sure which version you need, send us your VIN. We tell you the right code for free.

See all B38 Engines · Search B38A15 in the shop

Are there other versions of the BMW B38A15?

In our yard the B38A15 is the only listed version of the B38 family. It makes 100 kW (136 HP) and 220 Nm, and was built from 2014 to 2024.

Engines in one family share a basic block, but the turbo, the injection, the sensors and the engine computer can differ. A higher power version often has different pistons, a bigger turbo or a different fuel system.

This is why we ask for the exact code. Fitting a different version can work, but the wiring, the software and sometimes the gearbox must be changed to match.

Not sure? Send us your VIN and your gearbox code. We match the engine family, the year window and the parts on the engine before anything is reserved, and the check is free.

See all B38 Engines · Search B38A15 in the shop

How long does delivery of a B38A15 engine take?

Orders confirmed before 14:00 CET on a working day leave Hamburg the same day. Later and weekend orders leave the next working day. Delivery to the Netherlands, Belgium, Germany, France, Luxembourg and Denmark takes 1 to 3 working days.

Spain, Italy, Portugal, Poland, Czechia, Austria, Ireland, the Nordics and the Baltics take 2 to 5 working days. Greek and Spanish islands, Malta, Cyprus and remote areas take 4 to 8 working days. The UK and other countries outside the EU are quoted one by one.

Shipping is a flat 249 € per order. It is added once at checkout and printed on the invoice, so there is no extra fee later. Every engine is drained, sealed at each opening, strapped to a heat-treated pallet and shrink-wrapped, then photographed before it leaves the yard.

You get a tracking number when the pallet is collected. Check the wrapping before you sign, and note any damage on the paperwork.

See all B38 Engines · Search B38A15 in the shop

What should I replace when I fit a used B38A15 engine?

A used engine lasts longest when it starts life in your car with fresh fluids and new seals. Fit a new oil filter and fresh oil of the grade BMW lists for this engine, and refill the coolant with the correct BMW antifreeze mix. Change the drive belt, the thermostat and the water pump seals if they look tired, because they are cheap while the engine is out. Use new gaskets for the exhaust manifold, the intake and the sump plug, and check every hose clip before the first start.

Look at the engine mounts and the clutch or the torque converter while the engine is out. Old mounts can crack a new engine's brackets, and a worn clutch is much easier to change now.

Before the first start, turn the engine over without fuel until the oil pressure light goes out. Then let it idle, check for leaks, and drive gently for the first few hundred kilometres.

The warranty asks for fitting by a qualified mechanic and the correct oil, coolant and filters. Keep your receipts in case you ever need to make a claim.

See all B38 Engines · Search B38A15 in the shop

Does a used B38A15 engine come with a warranty?

Yes. Eligible engines come with a 12 months warranty from the delivery date. It covers internal mechanical failure under normal use and correct fitting by a qualified mechanic or workshop.

The warranty does not cover damage from wrong fitting, overheating, low oil, wrong fluids or fuel, engines that were opened or modified without our approval, or labour and towing costs.

To claim, send us your order number, a short description of the problem, photos or a video, and a mechanic's report if we ask for one. If the claim is approved, we repair, replace or refund the engine.

Keep the receipts for the fitting, the oil and the filters. They make any claim quick and simple.

See all B38 Engines · Search B38A15 in the shop

Can you check if a B38A15 fits my car with my VIN?

Yes, and it is free. Send the 17-character VIN of your car and, if you have it, the gearbox code. We check the engine family, the build year window and the parts your car needs.

For the B38A15, we confirm that your car was built with this code or with a version that can take it. BMW used it in the BMW F20 118i, BMW F40 118i, BMW F45 218i and BMW F48 X1 sDrive18i.

We only reserve an engine once the match is confirmed, so you never pay for the wrong unit. You can reach the Hamburg desk by email at autowerkeengines@gmail.com, or by phone and WhatsApp on +49 15510 030835, Monday to Friday, 9:00 to 16:00 CET.

You can also use the VIN check on our site. It reads the year, the make, the model and the engine from the public vehicle register.

See all B38 Engines · Search B38A15 in the shop

What should I know about the BMW B38 engine?

BMW B38 1.5 three-cylinder turbo petrol engines for 118i and 218i. We list one version: B38A15 (1.5 liter (1,499 cc), 100 kW (136 HP), 2014 to 2024).

Because there is only one version, the code is easy to match. You still need the engine computer and wiring that suit your car.

The B38 family was used in chassis F20, F40, F45 and F48. The photos on each listing show the actual engine, not a stock picture. The yard checks the code, records what is bolted on, and seals the openings before the engine is offered.

Not sure? Send us your VIN and your gearbox code. We match the engine family, the year window and the parts on the engine before anything is reserved, and the check is free.

See all B38 Engines

What should I check on a used BMW B38 engine?

Start with the basics: the engine code on the block, the recorded mileage and the photos. Make sure the code matches your car and the parts you need are on the unit.

On a B38 petrol engine, a fitter usually checks the spark plugs, the coils, the timing side and the oil seals. These parts are easy to check before fitting and easy to change if needed.

Ask the desk for more pictures of any listing. We are happy to show the stamp, the ports and the ancillaries before you decide. An inspection certificate can travel with the order on request.

Once fitted, change the oil and filter early and drive gently at first. Report any problem right away so the warranty stays valid.

See all B38 Engines · Inspection certificate

Which years were BMW B38 engines made?

BMW built the B38 engines we list from about 2014 to 2024. The B38A15 ran from 2014 to 2024.

They went into chassis F20, F40, F45 and F48. The exact year of a car matters, because BMW sometimes changed the engine version or its parts in the middle of a model's life.

Each listing in our yard names the engine year, so you can match it to the build date of your car.

Not sure? Send us your VIN and your gearbox code. We match the engine family, the year window and the parts on the engine before anything is reserved, and the check is free.

See all B38 Engines

More answers from the Hamburg desk

These are further questions buyers ask us when choosing a replacement engine, answered by the people who check, pack and ship the engines.

How long does engine delivery to Finland take?

Delivery from our Hamburg yard to Finland takes 2 to 5 working days after dispatch. Orders confirmed before 14:00 CET on a working day leave Hamburg the same day. Later and weekend orders leave the next working day.

Shipping is a flat 249 € per order. It is added once at checkout and printed on the invoice, so there is no extra fee later. Every engine is drained, sealed at each opening, strapped to a heat-treated pallet and shrink-wrapped, then photographed before it leaves the yard.

Finland is in the EU customs area for this shipment, so there is no import duty and no customs paperwork.

The carrier delivers to the kerb or a loading bay. Please have a forklift, a pallet truck or an engine crane ready, and check the wrapping before you sign.

Are the photos on each listing of the real engine?

Yes. The photos show the real unit in our Hamburg yard, not a catalogue picture.

Before an engine is listed we check the code, write down the parts on it and seal the openings. The photos are taken at the same time.

If you want to see more, ask the desk for extra photos or a short video. We send them before you pay.

An inspection certificate can also travel with the engine on request.

Glossary

• VANOS — BMW's variable camshaft timing system. It adjusts the intake camshaft (single VANOS) or both camshafts (double VANOS) to improve torque and emissions.
• Valvetronic — BMW's variable valve lift system. It controls engine load with the intake valves instead of a throttle plate, improving economy.
• Direct injection — Fuel is injected directly into the cylinder instead of the intake port. It improves efficiency but can cause carbon build-up on the intake valves.
• Wastegate — A valve that lets exhaust gas bypass the turbine to control boost pressure. Worn wastegates rattle and can cause boost faults.
• Long block — An engine with the block, head and internals but without most ancillaries such as manifolds, turbo, alternator or starter.
• Dressed engine — An engine with most ancillaries fitted, ready to install with fewer parts transferred.
• Compression test — A measurement of the pressure each cylinder builds when cranked. Even readings show healthy rings and valves.
• Leak-down test — A test that pressurises each cylinder and measures how much air escapes, showing where any leak is.
• LCI — Life Cycle Impulse, BMW's name for a mid-life update. Engines often change at the LCI.
• xDrive — BMW's all-wheel-drive system. xDrive cars often use a different sump and oil pickup.
• DME — Digital Motor Electronics, BMW's name for the engine control unit.
• CAS, FEM and BDC — The immobiliser and body modules that must be matched to the engine control unit on modern BMWs.
• Timing chain tensioner — A hydraulic or spring device that keeps the timing chain tight. Worn tensioners cause cold-start rattle.
• Rear-mounted timing chain — A timing chain at the gearbox end of the engine. Replacing it normally requires removing the engine.
• TU — Technical Update, BMW's suffix for a revised version of an engine.

Our verdict

The B38 has a clear set of strengths and a known list of weak points. Check the code against your VIN, ask for compression figures and photographs, replace the known weak parts while the engine is out, and fit it with fresh fluids and filters. Do that and a used B38 will give years of service.

Ready to order, or need help choosing? Browse every B38 in stock, contact the Hamburg desk or send us your VIN on WhatsApp.

Guides to each B38 version

• BMW B38B15 engine: specs, problems and prices
• BMW B38A15 engine: specs, problems and prices
• BMW B38B15A engine: specs, problems and prices