BMW X3 20d (G01) engine: which one, problems and replacement

The BMW X3 20d in the third X3 generation (G01, built 2017–2024) was built with 2 different engines over its life: the B47D20 (190 hp, 2014–2026) and the B47D20B (190 hp, 2014–2026).

Below you will find how to identify the engine in your X3 20d, the faults to look for, current prices for a replacement and the swap options that make sense.

• Generation: third X3, 2017–2024
• Body styles: G01 (SAV)
• Engines: B47D20, B47D20B
• Output: 190 hp
• Replacement engines in stock: 277 from 887,00 €

Which engine is in your X3 20d?

B47D20 in the X3 20d

The B47D20 was used in the G01 X3 20d, built 2014–2026. It is a 2.0 L turbocharged diesel inline-4 with 190 hp and 400 Nm. It has the same output as the B47D20B, so the build date decides which one your car has.

Reading the code: B marks a B-series code, BMW's modular engine family introduced from 2013 with 500 cc per cylinder; 47 is the family number; D stands for diesel, longitudinal installation for rear-drive and xDrive cars; 20 is the capacity in decilitres, so 2.0 litres.

B47D20B in the X3 20d

The B47D20B was used in the G01 X3 20d, built 2014–2026. It is a 2.0 L turbocharged diesel inline-4 with 190 hp and 400 Nm. It has the same output as the B47D20, so the build date decides which one your car has.

Reading the code: B marks a B-series code, BMW's modular engine family introduced from 2013 with 500 cc per cylinder; 47 is the family number; D stands for diesel, 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.

X3 20d engines by model year

The X3 20d kept the same engine for the whole G01 run, which makes ordering simple: any unit with the same code fits, subject to the gearbox, drive type and sump.

Other cars with the same engine as the X3 20d

A replacement engine does not have to come from another X3 20d. These models left the factory with the same engine code, so a unit from any of them is a candidate donor once the sump, mounts and ancillaries are matched to your car.

B47D20: BMW F30 320d, BMW G20 320d, BMW G30 520d, BMW G05 X5 25d.

B47D20B: BMW F30 320d, BMW G20 320d.

How to confirm your engine code

Because the X3 20d used more than one engine, the badge alone does not tell you which one your car has. The build date is the first clue; the VIN is the proof. Send us the last seven characters of the VIN and we read the engine code from BMW's records, or look for the code stamped on the block. How to find your BMW engine code.

Known X3 20d engine problems

The B47D20 and B47D20B in the X3 20d share the known weak points of the B47 family. Full B47 guide.

EGR cooler. BMW recalled many B47 cars to replace the EGR cooler, which could leak and cause a fire risk.

Diesel particulate filter. The DPF clogs on short-trip cars.

Injectors. Injectors leak or fail.

Symptoms to watch for on the X3 20d

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.

Black smoke under acceleration. Too much fuel for the air available: boost leaks, a sticking EGR valve, a dirty air mass meter or a leaking injector.

Hard starting when cold. Glow plugs or the glow plug control unit. On older diesels, also check the injection pump and fuel lines for air leaks.

Particulate filter warning. Short trips stop the DPF from regenerating. A long motorway run often clears it; a filter that keeps blocking may be covering an injector, EGR or turbo problem.

Looking after the X3 20d engine

• Oil: 0W-30 or 5W-30 BMW Longlife-04, about 5.25 litres.
• Service interval: Oil every 15,000 km or yearly.
• Timing drive: Timing chain at the rear (gearbox end).
• Workshop notes: Check front-drive (B47C) or rear-drive (B47D) before ordering.

Buying a used engine for the X3 20d: checklist

1. 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.
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. 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.
4. 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.
5. 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.
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. Injector correction values. On a diesel that can be run before removal, the injector correction values show whether one injector is delivering more or less fuel than the others. Large deviations mean an injector is on its way out.
8. Particulate filter and EGR history. Short-trip diesels clog their DPF and EGR systems. The engine may be fine, but ask whether the donor car had DPF warnings, and plan to clean or check your own filter before fitting.
9. 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.
10. 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.

BMW X3 20d replacement engine cost

Across 277 X3 20d engine units in our stock today, prices start at 887,00 € and reach 4.242,00 €. The median — the price in the middle of the range — is 2.830,00 €.

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.

X3 20d engine prices by model year

Engines from 2005–2009 have a median of 3.015,00 €, while units from 2020–2024 sit at 1.724,00 €. Newer engines usually cost more because they come from younger donor cars with lower mileage and later updates.

X3 20d engine 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.

3 of these come from G01 donor cars, priced from 1.712,00 € to 2.797,00 €. An engine from the same body is the most direct swap because the sump, mounts and ancillaries already match.

On top of the engine, budget for the workshop's labour and the parts that are best replaced while the engine is out: engine mounts, the rear main seal, cooling parts, a clutch or converter seal, fluids and filters.

Replacement engines in stock for the X3 20d

These X3 20d 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 F30 320d B47D20 Engine 2017, 178,100 km3.288,00 €BMW F31 320d B47D20 Engine 2017, 53,800 km2.654,00 €BMW F25 X3 xDrive20d B47D20 Engine 2016, 157,800 km2.742,00 €BMW F48 X1 xDrive20d B47D20 Engine 2017, 191,200 km2.771,00 €BMW F31 320d B47D20 Engine 2018, 138,500 km3.108,00 €BMW G30 520d B47D20 Engine 2017, 190,300 km3.256,00 €BMW F48 X1 xDrive20d B47D20 Engine 2019, 96,500 km3.276,00 €BMW F25 X3 xDrive20d B47D20 Engine 2019, 170,400 km2.876,00 €BMW F25 X3 xDrive20d B47D20 Engine 2015, 62,500 km3.167,00 €BMW F25 X3 xDrive20d B47D20 Engine 2015, 171,900 km2.930,00 €BMW F48 X1 xDrive20d B47D20 Engine 2018, 58,400 km3.167,00 €BMW F31 320d B47D20 Engine 2016, 56,800 km3.292,00 €

BMW F30 320d B47D20 Engine 2017, 178,100 km — 3.288,00 €, reduced from 4.450,00 €. It comes from a 2017 donor car with 178,100 km, and 14 units are available. Ask the desk for compression figures or extra photographs before you order.

BMW F31 320d B47D20 Engine 2017, 53,800 km — 2.654,00 €, reduced from 3.650,00 €. It comes from a 2017 donor car with 53,800 km, and 10 units are available. The listing shows every side of the engine and the fitted parts.

BMW F25 X3 xDrive20d B47D20 Engine 2016, 157,800 km — 2.742,00 €, reduced from 4.050,00 €. It comes from a 2016 donor car with 157,800 km, and 18 units are available. The listing shows every side of the engine and the fitted parts.

BMW F48 X1 xDrive20d B47D20 Engine 2017, 191,200 km — 2.771,00 €, reduced from 3.800,00 €. It comes from a 2017 donor car with 191,200 km, and 11 units are available. The listing shows every side of the engine and the fitted parts.

BMW F31 320d B47D20 Engine 2018, 138,500 km — 3.108,00 €, reduced from 3.800,00 €. It comes from a 2018 donor car with 138,500 km, and 16 units are available. We can confirm fitment against your VIN the same day.

BMW G30 520d B47D20 Engine 2017, 190,300 km — 3.256,00 €, reduced from 4.500,00 €. It comes from a 2017 donor car with 190,300 km, and 30 units are available. Ask the desk for compression figures or extra photographs before you order.

BMW F48 X1 xDrive20d B47D20 Engine 2019, 96,500 km — 3.276,00 €, reduced from 4.550,00 €. It comes from a 2019 donor car with 96,500 km, and 20 units are available. The listing shows every side of the engine and the fitted parts.

BMW F25 X3 xDrive20d B47D20 Engine 2019, 170,400 km — 2.876,00 €, reduced from 4.200,00 €. It comes from a 2019 donor car with 170,400 km, and 23 units are available. We can confirm fitment against your VIN the same day.

BMW F25 X3 xDrive20d B47D20 Engine 2015, 62,500 km — 3.167,00 €, reduced from 4.050,00 €. It comes from a 2015 donor car with 62,500 km, and 14 units are available. The listing shows every side of the engine and the fitted parts.

BMW F25 X3 xDrive20d B47D20 Engine 2015, 171,900 km — 2.930,00 €, reduced from 3.600,00 €. It comes from a 2015 donor car with 171,900 km, and 5 units are available. The listing shows every side of the engine and the fitted parts.

BMW F48 X1 xDrive20d B47D20 Engine 2018, 58,400 km — 3.167,00 €, reduced from 4.150,00 €. It comes from a 2018 donor car with 58,400 km, and 28 units are available. The listing shows every side of the engine and the fitted parts.

BMW F31 320d B47D20 Engine 2016, 56,800 km — 3.292,00 €, reduced from 3.950,00 €. It comes from a 2016 donor car with 56,800 km, and 19 units are available. The listing shows every side of the engine and the fitted parts.

Will it fit my X3 20d?

Will the B47D20 fit my BMW G01 X3 20d?

For the BMW G01 X3 20d, the B47D20 is the factory engine and the one to order. The third X3 was built 2017–2024, and the B47D20 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 G01 X3 20d?

We have 3 B47D20 engines from G01 donor cars, priced from 1.712,00 € to 2.797,00 €. 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 B47D20B fit my BMW G01 X3 20d?

The B47D20B is the original engine for the BMW G01 X3 20d, which makes it the straightforward choice. The third X3 was built 2017–2024, and the B47D20B 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 G01 X3 20d?

We have 3 B47D20B engines from G01 donor cars, priced from 1.712,00 € to 2.797,00 €. 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.

Engine swaps and upgrades for the X3 20d

These engines were fitted to other versions of the G01 at the factory, which makes them the most practical upgrades: the body was designed around them and many parts are shared.

Can I fit the B46B20 in my X3 20d?

It is a full conversion: the B46B20 runs on petrol and the B47D20B on diesel, so the fuel system, wiring, engine control unit, instrument coding and usually the gearbox change too. The gain is 68 hp and 0 Nm. In Germany and most of Europe an engine swap must be inspected and registered.

Can I fit the B48B20 in my X3 20d?

It is a full conversion: the B48B20 runs on petrol and the B47D20B on diesel, so the fuel system, wiring, engine control unit, instrument coding and usually the gearbox change too. The gain is 68 hp and 0 Nm. In Germany and most of Europe an engine swap must be inspected and registered.

Can I fit the B48B20TU in my X3 20d?

It is a full conversion: the B48B20TU runs on petrol and the B47D20B on diesel, so the fuel system, wiring, engine control unit, instrument coding and usually the gearbox change too. The gain is 68 hp and 0 Nm. In Germany and most of Europe an engine swap must be inspected and registered.

Fitting a replacement engine in the X3 20d

1. 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.
2. 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.
3. 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.
4. Code the injectors and bleed the fuel. Enter the injector correction codes into the ECU, check the glow plugs and bleed the fuel system so the engine does not crank dry.
5. Check the particulate filter. If the old engine failed with oil or coolant entering the exhaust, the DPF may be contaminated. Check its back-pressure before relying on it.
6. 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.
7. 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.
8. 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.
9. 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.

The full fitting and first-start procedure.

Delivery, warranty and payment

Before an X3 20d 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.

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.

A 12-month warranty covers eligible internal failure when the engine is fitted by a qualified workshop with new fluids and filters. You can pay by card, bank transfer or crypto and receive the invoice by email straight away.

All G01 engines · B47 engine guide · BMW X3 20d engines for sale · Send us your VIN