BMW B48B20B engine: specs, problems and prices

BMW built the B48B20B from 2019 to 2026. It is a 2.0 L turbocharged petrol inline-4 with 258 hp and 400 Nm, part of the B48 family. You will find it in the BMW G20 330i, BMW G30 530i and BMW G01 X3 30i.

This guide is about the B48B20B specifically: its specification, the cars that use it, how it differs from the other B48 versions, what to check, prices from our stock and fitment answers for each model. For the history of the whole family, read our B48 and B46 guide.

• Capacity and layout: 2.0 L, inline-4, turbocharged
• Output: 258 hp and 400 Nm
• Production: 2019–2026
• Fitted to: 3 models across 3 chassis generations
• In our stock: 33 units from 1.143,00 € — B48B20B engines for sale

B48B20B specifications

The B48B20B is a 2.0 L inline-4 petrol engine, turbocharged, rated at 258 hp and 400 Nm. BMW built it from 2019 to 2026. That is about 129 hp and 200 Nm per litre, a high specific output that reflects a performance-focused design. Within the B48 family, it is the most powerful version, while the B48A20 (192 hp) is milder. It was fitted to the BMW G20 330i, BMW G30 530i and BMW G01 X3 30i.

What the code B48B20B means

• B marks a B-series code, BMW's modular engine family introduced from 2013 with 500 cc per cylinder.
• 48 is the family number.
• B stands for petrol, longitudinal installation for rear-drive and xDrive cars.
• 20 is the capacity in decilitres, so 2.0 litres.
• B identifies the version or output stage.

Which BMW models use the B48B20B

In the G20 seventh 3 Series (2018–), the B48B20B powered the 330i. We have 3 B48B20B units from G20 donor cars. All G20 engines

In the G30 seventh 5 Series (2016–2023), the B48B20B powered the 530i. We have 3 B48B20B units from G30 donor cars. All G30 engines

In the G01 third X3 (2017–2024), the B48B20B powered the X3 30i. We have 6 B48B20B units from G01 donor cars. All G01 engines

B48B20B compared with other B48 versions

B48B20B or B48B20TU?

The B48B20TU has the same 258 hp as the B48B20B, from the same 2.0 L, and was built 2018–2026. Versions of the same size share the block and most mounting points, but the turbo or intake, injectors, software and sometimes the sump differ. Fitting one in place of the other usually means transferring parts and coding the engine control unit, so the simplest choice is the code your car left the factory with.

B48B20B or B48B20?

The B48B20 has the same 258 hp as the B48B20B, from the same 2.0 L, and was built 2014–2026. Versions of the same size share the block and most mounting points, but the turbo or intake, injectors, software and sometimes the sump differ. Fitting one in place of the other usually means transferring parts and coding the engine control unit, so the simplest choice is the code your car left the factory with.

B48B20B or B48A20?

The B48A20 has 66 hp less than the B48B20B (192 against 258 hp), from the same 2.0 L, and was built 2014–2024. Versions of the same size share the block and most mounting points, but the turbo or intake, injectors, software and sometimes the sump differ. Fitting one in place of the other usually means transferring parts and coding the engine control unit, so the simplest choice is the code your car left the factory with.

Common B48B20B problems

The B48B20B shares its weak points with the rest of the B48 family. These are the faults to check on a used unit and on your own engine. The full explanation of each is in the B48 and B46 guide.

PCV and valve cover. Valve cover seals and PCV parts fail.

B48B20B maintenance

• 0W-20 or 0W-30 BMW Longlife-17 FE+ or 01, about 5.25 litres.
• Oil every 15,000 km or yearly.
• Timing chain at the rear (gearbox end).

Will the B48B20B fit my car?

Will the B48B20B fit my BMW G20 330i?

Yes, the BMW G20 330i left the factory with the B48B20B, so a B48B20B from another car is the direct replacement. The seventh 3 Series was built 2018–, and the B48B20B was produced 2019–2026, 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 330i?

We have 3 B48B20B engines from G20 donor cars, priced from 1.551,00 € to 2.276,00 €. 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 B48B20B fit my BMW G30 530i?

The B48B20B is the original engine for the BMW G30 530i, which makes it the straightforward choice. The seventh 5 Series was built 2016–2023, and the B48B20B was produced 2019–2026, 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 G30 530i?

We have 3 B48B20B engines from G30 donor cars, priced from 1.842,00 € to 2.807,00 €. 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 B48B20B fit my BMW G01 X3 30i?

The B48B20B is the original engine for the BMW G01 X3 30i, which makes it the straightforward choice. The third X3 was built 2017–2024, and the B48B20B was produced 2019–2026, 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 G01 X3 30i?

We have 6 B48B20B engines from G01 donor cars, priced from 1.310,00 € to 3.241,00 €. 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.

B48B20B prices

Our B48B20B stock runs to 33 units, priced from 1.143,00 € to 3.737,00 € with a median of 2.283,00 €.

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.

B48B20B prices by model year

Engines from 2000–2004 have a median of 1.143,00 €, while units from 2020–2024 sit at 2.576,00 €. Newer engines usually cost more because they come from younger donor cars with lower mileage and later updates.

B48B20B 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.

B48B20B engines in stock

These B48B20B units are in our Hamburg yard right now. Each listing shows real photographs of the engine you receive, its mileage and what is fitted.

BMW G20 330e B48B20B Engine 20191.551,00 €BMW 530i F10 B48B20B Engine 20132.907,00 €BMW X3 30i G01 B48B20B Engine 2018 · 165,000 km1.310,00 €BMW 430i F32 B48B20B Engine 2019 · 223,000 km1.835,00 €BMW X4 30i G02 B48B20B Engine 2019 · 66,000 km1.981,00 €BMW G20 330i B48B20B Complete Engine2.276,00 €BMW X4 30i G02 B48B20B Engine 2023 · 153,000 km1.206,00 €BMW X4 30i G02 B48B20B Engine 2021 · 160,000 km3.700,00 €BMW B48B20B Engine2.332,00 €

BMW G20 330e B48B20B Engine 2019 — 1.551,00 €, reduced from 2.000,00 €. It comes from a 2019 donor car, and 21 units are available. We can confirm fitment against your VIN the same day.

BMW 530i F10 B48B20B Engine 2013 — 2.907,00 €, reduced from 3.450,00 €. It comes from a 2013 donor car, and 8 units are available. Ask the desk for compression figures or extra photographs before you order.

BMW X3 30i G01 B48B20B Engine 2018 · 165,000 km — 1.310,00 €, reduced from 1.650,00 €. It comes from a 2018 donor car with 165,000 km, and 8 units are available. We can confirm fitment against your VIN the same day.

BMW 430i F32 B48B20B Engine 2019 · 223,000 km — 1.835,00 €, reduced from 2.300,00 €. It comes from a 2019 donor car with 223,000 km, and 22 units are available. Ask the desk for compression figures or extra photographs before you order.

BMW X4 30i G02 B48B20B Engine 2019 · 66,000 km — 1.981,00 €, reduced from 2.600,00 €. It comes from a 2019 donor car with 66,000 km, and 18 units are available. Ask the desk for compression figures or extra photographs before you order.

BMW G20 330i B48B20B Complete Engine — 2.276,00 €, reduced from 2.800,00 €. It comes from a recorded donor car, and 23 units are available. The listing shows every side of the engine and the fitted parts.

BMW X4 30i G02 B48B20B Engine 2023 · 153,000 km — 1.206,00 €, reduced from 1.950,00 €. It comes from a 2023 donor car with 153,000 km, and 5 units are available. We can confirm fitment against your VIN the same day.

BMW X4 30i G02 B48B20B Engine 2021 · 160,000 km — 3.700,00 €, reduced from 4.650,00 €. It comes from a 2021 donor car with 160,000 km, and 26 units are available. Ask the desk for compression figures or extra photographs before you order.

BMW B48B20B Engine — 2.332,00 €, reduced from 2.800,00 €. It comes from a recorded donor car, and 12 units are available. Ask the desk for compression figures or extra photographs before you order.

Buying a used B48B20B: checklist

1. 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.
2. 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.
3. 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.
4. 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.
5. 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.
6. 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.
7. 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.
8. 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.
9. 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.
10. 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.
11. 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.
12. 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.

Questions about the B48B20B

What comes with a used B48B20 engine?

Each B48B20 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 B48 Engines · Search B48B20 in the shop

What is the BMW B48B20 engine?

The BMW B48B20 is a 2.0 liter (1,998 cc) petrol engine from the B48 family. It has an inline 4, DOHC, 16 valve layout with a twin-scroll turbocharger, and makes 190 kW (258 HP) with 400 Nm of torque. BMW built it from 2015 to 2025 and it meets the Euro 6 emission standard.

You find the B48B20 in the BMW G20 330i, BMW G21 330i, BMW G30 530i, BMW G01 X3 xDrive30i, BMW F30 330i, BMW F40 128ti and BMW G22 430i. What we list: BMW B48 2.0 turbo petrol engines for 330i, 530i, X3 and 1 Series.

At Autowerke Engines every B48B20 is a real used engine from our yard in Hamburg. 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. 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 B48 Engines · Search B48B20 in the shop

Will the B48B20 engine fit my BMW F40 128ti?

Yes, if your BMW F40 128ti was built with the B48B20. BMW used this 2.0 liter (1,998 cc) petrol engine with 190 kW (258 HP) in the F40 128ti from about 2015 to 2025.

In our records the B48B20 is the engine for the F40 128ti, 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 B48 Engines · Search B48B20 in the shop

Does a used B48B20 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 B48 Engines · Search B48B20 in the shop

Which years were BMW B48 engines made?

BMW built the B48 engines we list from about 2015 to 2025. The B48B20 ran from 2015 to 2025.

They went into chassis G20, G21, G30, G01, F30, F40 and G22. 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 B48 Engines

What should I replace when I fit a used B48B20 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 B48 Engines · Search B48B20 in the shop

How much is a replacement B48B20 engine for a BMW G20 330i?

A used B48B20 for the BMW G20 330i costs from about 2.650 € to 4.200 € 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 B48B20 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 B48 Engines · Search B48B20 in the shop

Will the B48B20 engine fit my BMW G20 330i?

Yes, if your BMW G20 330i was built with the B48B20. BMW used this 2.0 liter (1,998 cc) petrol engine with 190 kW (258 HP) in the G20 330i from about 2015 to 2025.

In our records the B48B20 is the engine for the G20 330i, which makes the match simple. Still, check the code on your old engine or send us your VIN.

Also tell us if your G20 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 B48 Engines · Search B48B20 in the shop

Delivery, warranty and payment

Every B48B20B we sell is drained, sealed at each opening, strapped to a heat-treated pallet and shrink-wrapped before it leaves Hamburg. You receive photographs of the packed engine and a tracking number.

Door-to-door delivery is included to the address you give at checkout. Typical delivery takes three to five working days within Germany and neighbouring countries and five to ten working days to the rest of Europe and the UK.

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.

B48 and B46 engine guide · B48B20B engines for sale · All B48 and B46 engines · Send us your VIN