BMW 530i SULEV (G30) engine: which one, problems and replacement

The BMW 530i SULEV in the seventh 5 Series generation (G30, built 2016–2023) was built with one engine, the B46B20: a 2.0 L petrol inline-4 with 258 hp.

This guide tells you which engine your 530i SULEV has, what goes wrong with it, what a replacement costs from our stock and what else to plan for when you fit one.

• Generation: seventh 5 Series, 2016–2023
• Body styles: G30 (saloon)
• Engines: B46B20
• Output: 258 hp
• Replacement engines in stock: ask the desk for the next arrival

Which engine is in your 530i SULEV?

B46B20 in the 530i SULEV

The B46B20 was used in the G30 530i SULEV, built 2015–2026. It is a 2.0 L turbocharged petrol inline-4 with 258 hp and 400 Nm.

Reading the code: B marks a B-series code, BMW's modular engine family introduced from 2013 with 500 cc per cylinder; 46 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.

530i SULEV engines by model year

The 530i SULEV kept the same engine for the whole G30 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 530i SULEV

A replacement engine does not have to come from another 530i SULEV. 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.

B46B20: BMW F30 330i SULEV, BMW G01 X3 30i.

How to confirm your engine code

The 530i SULEV only used the B46B20, but the exact version can still change with the build date, gearbox and market. 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 530i SULEV engine problems

The B46B20 in the 530i SULEV shares the known weak points of the B48 and B46 family. Full B48 and B46 guide.

Coolant leaks. Thermostat housings and coolant pipes leak.

Oil filter housing gasket. Leaks at higher mileage.

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

Water pump. The water pump can leak.

Symptoms to watch for on the 530i SULEV

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.

Looking after the 530i SULEV engine

• Oil: 0W-20 or 0W-30 BMW Longlife-17 FE+ or 01, 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 (B48A) or rear-drive (B48B) before ordering.

Buying a used engine for the 530i SULEV: checklist

1. 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.
2. 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.
3. 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.
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. 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.
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.

BMW 530i SULEV replacement engine cost

We do not have a 530i SULEV engine on the shelf at the moment. Send us your VIN or the code you need and the desk will tell you when the next unit arrives and what it will cost.

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.

Will it fit my 530i SULEV?

Will the B46B20 fit my BMW G30 530i SULEV?

Yes, the BMW G30 530i SULEV left the factory with the B46B20, so a B46B20 from another car is the direct replacement. The seventh 5 Series was built 2016–2023, and the B46B20 was produced 2015–2026, 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 SULEV?

We do not have a B46B20 on the shelf for the G30 530i SULEV at the moment. Units arrive regularly; send us your VIN and we will tell you when the next one is ready and what it will cost, including delivery.

Engine swaps and upgrades for the 530i SULEV

These engines were fitted to other versions of the G30 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 B57D30 in my 530i SULEV?

It is a full conversion: the B57D30 runs on diesel and the B46B20 on petrol, so the fuel system, wiring, engine control unit, instrument coding and usually the gearbox change too. The gain is 7 hp and 220 Nm. In Germany and most of Europe an engine swap must be inspected and registered.

Can I fit the B57D30A in my 530i SULEV?

It is a full conversion: the B57D30A runs on diesel and the B46B20 on petrol, so the fuel system, wiring, engine control unit, instrument coding and usually the gearbox change too. The gain is 7 hp and 220 Nm. In Germany and most of Europe an engine swap must be inspected and registered.

Can I fit the B57D30T in my 530i SULEV?

It is a full conversion: the B57D30T runs on diesel and the B46B20 on petrol, so the fuel system, wiring, engine control unit, instrument coding and usually the gearbox change too. The gain is 62 hp and 280 Nm. In Germany and most of Europe an engine swap must be inspected and registered.

Fitting a replacement engine in the 530i SULEV

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. Reset VANOS adaptations. Clear the VANOS adaptations so the ECU learns the camshaft positions of the new engine.
5. Teach the Valvetronic limit stops. Run the Valvetronic learning routine so the ECU knows the eccentric shaft limits.
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.

530i SULEV engine questions

How long does delivery of a B46B20 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 B46 Engines · Search B46B20 in the shop

How much is a replacement B46B20 engine for a BMW F45 225i?

A used B46B20 for the BMW F45 225i costs from about 2.150 € to 3.450 € 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 B46B20 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 B46 Engines · Search B46B20 in the shop

Can you check if a B46B20 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 B46B20, we confirm that your car was built with this code or with a version that can take it. BMW used it in the BMW F48 X1 xDrive25i, BMW F39 X2 xDrive25i, BMW F45 225i and BMW U11 X1 xDrive23i.

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 B46 Engines · Search B46B20 in the shop

Will the B46B20 engine fit my BMW U11 X1 xDrive23i?

Yes, if your BMW U11 X1 xDrive23i was built with the B46B20. BMW used this 2.0 liter (1,998 cc) petrol engine with 170 kW (231 HP) in the U11 X1 xDrive23i from about 2015 to 2023.

In our records the B46B20 is the engine for the U11 X1 xDrive23i, 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 B46 Engines · Search B46B20 in the shop

What is the BMW B46B20 engine?

The BMW B46B20 is a 2.0 liter (1,998 cc) petrol engine from the B46 family. It has an inline 4, DOHC, 16 valve layout with a twin-scroll turbocharger, and makes 170 kW (231 HP) with 350 Nm of torque. BMW built it from 2015 to 2023 and it meets the Euro 6 emission standard.

You find the B46B20 in the BMW F48 X1 xDrive25i, BMW F39 X2 xDrive25i, BMW F45 225i and BMW U11 X1 xDrive23i. What we list: BMW B46 transverse 2.0 turbo petrol engines for X1, X2 and 2 Series Active Tourer.

At Autowerke Engines every B46B20 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 B46 Engines · Search B46B20 in the shop

Will the B46B20 engine fit my BMW F45 225i?

Yes, if your BMW F45 225i was built with the B46B20. BMW used this 2.0 liter (1,998 cc) petrol engine with 170 kW (231 HP) in the F45 225i from about 2015 to 2023.

In our records the B46B20 is the engine for the F45 225i, 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 B46 Engines · Search B46B20 in the shop

Will the B46B20 engine fit my BMW F48 X1 xDrive25i?

Yes, if your BMW F48 X1 xDrive25i was built with the B46B20. BMW used this 2.0 liter (1,998 cc) petrol engine with 170 kW (231 HP) in the F48 X1 xDrive25i from about 2015 to 2023.

In our records the B46B20 is the engine for the F48 X1 xDrive25i, 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 B46 Engines · Search B46B20 in the shop

How much power and torque does the BMW B46B20 have?

From the factory the BMW B46B20 makes 170 kW (231 HP) and 350 Nm of torque. It is a 2.0 liter (1,998 cc) inline 4, DOHC, 16 valve petrol engine with a twin-scroll 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 B46B20 on our site lists its year and mileage. You can ask for extra photos, a close-up of the code stamp or a short video before you order.

See all B46 Engines · Search B46B20 in the shop

Is the BMW B46B20 a diesel or petrol engine?

The B46B20 is a petrol engine. It is a 2.0 liter (1,998 cc) inline 4, DOHC, 16 valve unit with a twin-scroll 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 B46 Engines · Search B46B20 in the shop

What comes with a used B46B20 engine?

Each B46B20 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 B46 Engines · Search B46B20 in the shop

Delivery, warranty and payment

Before a 530i SULEV 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.

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.

All G30 engines · B48 and B46 engine guide · Send us your VIN