vinkodex.

BMW X6 X6 M50i common faults.

2019–2023, SUV, petrol, 530 HP.

The fault list covers: N63B44T3 engine, ZF8HP75, ZF8HP90 transmission.

What you save stays on this device only. My saves

5 fault write-ups. All are important. 26 recalls.

If you know the year, pick it. Faults for other years drop out of the list.

Before you buy

Known faults

5 important faults

critical2

On this engine the injectors were also listed as parts to be replaced in the maker's own programme, which means their failure is a known one. A faulty injector puts too much fuel into the cylinder. The liquid cannot be compressed, so the piston hits it on its way up: this is hydraulic lock, and it can damage the connecting rod bearing and the connecting rod as well. The early sign is rough running and hard starting. The fault can start from 60,000 km. The maker ran a separate programme for this engine, called the Customer Care Package, from December 2014. The franchised dealers had to check seven parts: the timing chain, the fuel injectors, the mass air flow sensor, the crankcase vent lines, the battery, the vacuum pump and the low pressure fuel sensor. These had to be replaced free of charge, even if the car had already fallen out of the four-year, 50,000-mile warranty. The same programme also shortened the oil change interval: 10,000 miles or one year instead of 15,000 miles or two years. Before buying it is therefore worth asking whether this programme was carried out on the car.

above 60,000 km

What to check

  • Ask whether the Customer Care Package was carried out, and whether the injectors were replaced
  • Start the engine cold and watch for hard starting and rough running
  • Read the fault memory and look for a code reporting a misfire on a specific cylinder
2 more steps in the write-up

The timing chain stretches between 80,000 and 120,000 km, and the plastic chain guides break. The broken pieces end up in the sump and block the lubrication system. From then on the engine is starved of oil, which takes the bearings and the turbochargers with it. The early sign is a metallic rattling from the front of the engine on a cold start. The stretching of the chain also features in the American class actions, alongside the extreme oil consumption. The maker ran a separate programme for this engine, called the Customer Care Package, from December 2014. The franchised dealers had to check seven parts: the timing chain, the fuel injectors, the mass air flow sensor, the crankcase vent lines, the battery, the vacuum pump and the low pressure fuel sensor. These had to be replaced free of charge, even if the car had already fallen out of the four-year, 50,000-mile warranty. The same programme also shortened the oil change interval: 10,000 miles or one year instead of 15,000 miles or two years. Before buying it is therefore worth asking whether this programme was carried out on the car.

between 80,000 and 120,000 km

What to check

  • Start the engine cold and listen for metallic rattling from the front of the engine
  • Ask whether the Customer Care Package was carried out, and whether the chain was replaced
  • Read the fault memory and look for a code reporting a camshaft position deviation
2 more steps in the write-up

expensive3

The heart of the four wheel drive in the longitudinal engine BMW X models (X3, X5 and the X1 E84) is the ATC transfer case. It has two faults, and you can feel both while driving.

Show the rest

The first is wear of the clutch pack and the fluid: in a slow, tight corner (a car park, a roundabout) the car jerks and "hops", as if the drive grabbed and let go. You can also get a jerk when pulling away on a slope. The second is the plastic actuator gear: the position signal is lost, the brake, ABS and 4x4/DSC lights come on together on the dash, and a clicking is audible from the transfer case when you switch the ignition off.

Workshops often propose a full transfer case replacement straight away. But the plastic gear can be replaced on its own, and the wrong tyre size or a mixed set of tyres also imitates the jerking, because the transfer case then slips continuously. So clear up the tyres and the fault code first, before you pay for a transfer case replacement.

between 72,000 and 175,000 km

What to check

  • In a slow, tight corner (a car park) watch for jerking, binding and a "skipping" feel
  • When pulling away on light throttle, can you feel the drivetrain jerk
  • Watch the dash: 4x4, ABS, DSC and brake lights together point at the actuator
4 more steps in the write-up

The valve stem seals start to lose their sealing from 90,000 km, and oil gets into the combustion chamber along the valve stem. The burning oil lays soot on the piston rings, they start to stick, and from then on the consumption grows further; the lubrication also gets tighter and the exhaust smokes. The scale of the consumption on this engine is extraordinary. In the American class action the plaintiffs report around one litre every 1,200 km, and one of them one litre every 1,600 km. In 2013 the maker issued a new oil consumption standard for this engine in a bulletin, and took the position that this is not a defect: according to it every one of its engines may use that much. The lawsuit points out that with this standard the owner has to top up the oil twenty times before reaching the factory 15,000-mile oil change interval. The maker ran a separate programme for this engine, called the Customer Care Package, from December 2014. The franchised dealers had to check seven parts: the timing chain, the fuel injectors, the mass air flow sensor, the crankcase vent lines, the battery, the vacuum pump and the low pressure fuel sensor. These had to be replaced free of charge, even if the car had already fallen out of the four-year, 50,000-mile warranty. The same programme also shortened the oil change interval: 10,000 miles or one year instead of 15,000 miles or two years. Before buying it is therefore worth asking whether this programme was carried out on the car. The repair means opening the cylinder head, and because of the V layout of the engine on both sides.

above 90,000 km

What to check

  • Ask how much oil has to be added between two changes, and ask for a figure
  • Ask whether the Customer Care Package programme was carried out, and ask for the confirmation
  • Read the service book: the shortened, one-year oil change cycle is expected here
2 more steps in the write-up

The ZF eight speed automatic (BMW Steptronic 8HP family) has two faults, and you can feel both.

Show the rest

The first is the mechatronics unit: the valve body and the control electronics in one. If the solenoids or the pressure regulation weaken, the gearbox jerks, the D/R engagement is delayed, it logs a gear ratio fault code, and finally drops into limp mode (often staying in 2nd or 3rd).

The second, and often misdiagnosed, is the connector sleeve of the mechatronics unit: the O-ring of the plastic sleeve ages, and ATF leaks from the side of the housing, exactly where the wiring harness enters. This is easy to mistake for a rear crankshaft seal. The trail starts from the driver's side of the housing, not from the clutch side.

On cars built in 2023 there was also a separate safety recall for a welding fault in the mechatronics unit. That is not the same as the wear related sleeve and the valves.

Check the fluid level, the area around the sleeve and the fault codes first; do not accept a "full gearbox replacement" quote straight away.

above 120,000 km

What to check

  • On the test drive watch for delayed D/R engagement, a jerk when shifting, and limp mode (a stuck gear)
  • Look at the driver's side of the gearbox housing where the wiring harness enters: an ATF trail from the sleeve is suspect
  • Do not confuse it with a rear crankshaft seal leak: the direction of the trail decides
3 more steps in the write-up

Checklist

BMW X6 X6 M50i

First what you would check on any car. Then the faults of this model.

Before you buy

Checklist

The printed sheet starts with what you would check on any car. What you tick stays on this device only.

On every car

Ask the owner

vinkodex.com · Before you buy it, see what can go wrong.

Official recall26 recallsShow

The manufacturer fixes these for free at a franchised dealer. Ask with the VIN whether it was done.

Most recent: 7 July 2026

SR/02180/26Safety recallFire7 July 2026 · EU Safety Gate

The RSW22 starter with reinforced water tightness (RWT) may experience increased abrasion of the magnetic contact, causing deposits to build up at the lowest point inside the relay. These deposits may increase relay contact resistance, leading to starting failures or short circuits. If a short circuit occurs, either when attempting to start the vehicle or while driving due to vibration-related movement of the deposits, it could cause a thermal event and increase the risk of fire. The product does not comply with the Regulation on the approval and market surveillance of motor vehicles and their trailers, and of systems, components and separate technical units intended for such vehicles.

Remedy: Type of economic operator taking notified measure(s): Manufacturer Category of measure(s): Recall of the product from end users Date of entry into force: 07/07/2026

We could not check this: model year. The authority's notice

SR/00568/26Safety recallFire30 January 2026 · EU Safety Gate

The failure concerns the RSW22 starter, type RWT (reinforced for watertightness). Increased abrasion of the magnetic contact can lead to the formation of deposits at the lowest point of the relay interior. This in turn can increase the resistance of the relay contact, causing accidental ignition or even short circuits, possibly leading to a thermal reaction and fire. The product does not comply with the Regulation on the approval and market surveillance of motor vehicles and their trailers, and of systems, components and separate technical units intended for such vehicles.

Remedy: Type of economic operator taking notified measure(s): Manufacturer Category of measure(s): Recall of the product from end users Date of entry into force: 30/01/2026

We could not check this: model year. The authority's notice

25V671000VISIBILITY:WINDSHIELD:CRITICAL FASTENERSVISIBILITY:WINDSHIELD:CRITICAL FASTENERS8 October 2025 · NHTSA (USA)

BMW of North America, LLC (BMW) is recalling certain 2026 X4 and X6 vehicles. The windshield may not be sealed properly, allowing water to enter the power distribution box or electronic control unit.

Risk: Water inside electrical components can cause a loss of headlights or door closing functions, increasing the risk of a crash. In addition, an electrical short circuit may occur, increasing the risk of a fire while parked or driving.

Remedy: Dealers will inspect, reseal the windshield, and replace the vehicle control unit and wiring, free of charge. Owner notification letters are expected to be mailed November 21, 2025. Owners may contact BMW customer service at 1-800-525-7417.

We could not check this: model year. The authority's notice

20V483000TIRESTIRES14 August 2020 · NHTSA (USA)

BMW of North America, LLC (BMW) is recalling certain 2021 X6 (sDrive40i, xDrive40i and M50i) and X5 (sDrive40i, xDrive40i and M50i) vehicles equipped with certain Pirelli tires. The tires may have a damaged inner layer, possibly resulting in a rapid loss of pressure while the vehicle is moving.

Risk: A rapid loss of tire pressure while the vehicle is moving can affect vehicle handling and control, increasing the risk of a crash.

Remedy: BMW has notified all of the affected owners, and dealers will replace the defective tires, free of charge. BMW has contacted owners by telephone and those owners have had their cars remedied. Owner notification letters will not be sent. Owners may contact BMW customer service at 1-800-525-7417.

We could not check this: model year. The authority's notice

20V484000STRUCTURE:BODYSTRUCTURE:BODY14 August 2020 · NHTSA (USA)

BMW of North America, LLC (BMW) is recalling certain 2020 X6 sDrive40i, xDrive40i, X6 M50i and X6M vehicles. The rear spoiler may not be appropriately bonded to its mounting plate.

Risk: The rear spoiler on the roof may become loose, detach while driving, and could become a road hazard, increasing the risk of a crash, or injury to persons near the roadway.

Remedy: BMW will notify owners, and dealers will inspect the rear spoiler on the affected vehicles and replace them , if necessary, free of charge. The recall began October 14, 2020. Owners may contact BMW customer service at 1-800-525-7417.

We could not check this: model year. The authority's notice

20V095000STRUCTURE:BODYSTRUCTURE:BODY19 February 2020 · NHTSA (USA)

BMW of North America, LLC (BMW) is recalling certain 2020 X6 sDrive40i, X6 xDrive40i, and X6 xDrive50i vehicles. The rear spoiler may detach.

Risk: If the spoiler detaches while driving, it can become a road hazard, increasing the risk of a crash.

Remedy: BMW will notify owners, and dealers will inspect and replace the rear spoiler, as necessary, free of charge. The recall began April 16, 2020. Owners may contact BMW customer service at 1-800-525-7417.

We could not check this: model year. The authority's notice

19V823000CHILD SEATCHILD SEAT18 November 2019 · NHTSA (USA)

BMW of North America, LLC. (BMW) is recalling certain 2015-2019 X6 sDrive35i, X6 xDrive35i, X6 xDrive50i, and X6M vehicles equipped with rear seat lower anchor bars used in securing child restraint seats. The lower anchor bars may become damaged over time when used with an ISOFIX-type, rigid-style connector, child restraint system.

Risk: Damaged lower anchor bars may increase the child's risk of injury in the event of a crash.

Remedy: BMW will notify owners, and dealers will weld a reinforcing bracket to the lower anchor bars and the vehicle body, free of charge. Owner notification began January 17, 2020. Owners may contact BMW customer service at 1-800-525-7417.

We could not check this: model year. The authority's notice

18V680000SUSPENSION:REARSUSPENSION:REAR28 September 2018 · NHTSA (USA)

BMW of North America, LLC (BMW) is recalling certain 2019 BMW X6 sDrive35i, X6 xDrive35i, X6 xDrive50i and X6M vehicles. The rear upper control arm pivot bolts may have been improperly hardened, possibly causing the rear upper control arms to break.

Risk: If a rear upper control arm breaks, it can affect vehicle handling and control, increasing the risk of a crash.

Remedy: All affected vehicles remain on dealer lots, therefore owner letters will not be mailed. BMW dealers will replace both rear upper control arms, free of charge. The recall began September 21, 2018. Owners may contact BMW customer service at 1-800-525-7417.

We could not check this: model year. The authority's notice

18V614000WHEELS:LUGS/NUTS/BOLTS/STUDSWHEELS:LUGS/NUTS/BOLTS/STUDS12 September 2018 · NHTSA (USA)

BMW of North America, LLC (BMW) is recalling certain 2018-2019 BMW X6 sDrive35i, X6 xDrive35i, X6 xDrive50i, and X6M vehicles. The wheel bolts on these vehicles may not have been properly tightened.

Risk: The improperly tightened wheel bolts may loosen and break, affecting vehicle handling and control and increasing the risk of a crash.

Remedy: BMW will notify owners, and dealers will replace and tighten all of the wheel bolts, free of charge. The recall began November 1, 2018. Owners may contact BMW customer service at 1-800-525-7417.

We could not check this: model year. The authority's notice

A12/00031/21Safety recallInjuriesno date · EU Safety Gate

The upper rear (roof) spoiler may not have been properly attached during the production process. This may cause the spoiler to become detached, posing a risk to the following traffic.

Remedy: Type of economic operator taking notified measure(s): Manufacturer Category of measure(s): Recall of the product from end users Date of entry into force: Unknown

We could not check this: model year. The authority's notice

A12/00042/20Safety recallInjuriesno date · EU Safety Gate

The four ISOFIX child-seat attachment brackets on the rear seats may not have the necessary structural durability. As a result, one or more of the brackets could break under increased fatigue loading during operation. This may increase the risk of injury in the event of an accident.

Remedy: Type of economic operator taking notified measure(s): Manufacturer Category of measure(s): Recall of the product from end users Date of entry into force: Unknown

We could not check this: model year. The authority's notice

A12/00099/21Safety recallInjuriesno date · EU Safety Gate

The tyres on the affected vehicles may not have been manufactured according to the specifications. Consequently, sudden loss of pressure and partial or complete tread separation may occur while driving, increasing the risk of an accident.

Remedy: Type of economic operator taking notified measure(s): Manufacturer Category of measure(s): Recall of the product from end users Date of entry into force: Unknown

We could not check this: model year. The authority's notice

A12/00184/24Safety recallInjuriesno date · EU Safety Gate

Due to a manufacturing error, the weld seam of the integrated transmission control unit (ITCU) may not have been correctly executed. As a result, transmission oil could leak into the ITCU, causing it to fail. This may lead to transmission seizure, increasing the risk of an accident. The product does not comply with the Regulation on the approval and market surveillance of motor vehicles and their trailers, and of systems, components and separate technical units intended for such vehicles.

Remedy: Type of economic operator taking notified measure(s): Manufacturer Category of measure(s): Recall of the product from end users Date of entry into force: Unknown

We could not check this: model year. The authority's notice

A12/00307/21Safety recallInjuriesno date · EU Safety Gate

The steering spindle may not have been properly bolted and could become detached. As a result the steering control would be lost, increasing the risk of an accident.

Remedy: Type of economic operator taking notified measure(s): Manufacturer Category of measure(s): Recall of the product from end users Date of entry into force: Unknown

We could not check this: model year. The authority's notice

A12/00447/20Safety recallInjuriesno date · EU Safety Gate

The upper spoiler might have been inappropriately manufactured. Consequently, it may detach while the car is in movement, increasing the risk of accident to the following traffic.

Remedy: Type of economic operator taking notified measure(s): Manufacturer Category of measure(s): Recall of the product from end users Date of entry into force: Unknown

We could not check this: model year. The authority's notice

A12/00590/21Safety recallInjuriesno date · EU Safety Gate

Defective hydraulic unit of the braking system may cause a limited braking support and increased braking distance. Moreover, in such cases the ABS system would not be available. This will lead to increased risk of an accident.

Remedy: Type of economic operator taking notified measure(s): Manufacturer Category of measure(s): Recall of the product from end users Date of entry into force: Unknown

We could not check this: model year. The authority's notice

A12/00792/24Safety recallInjuriesno date · EU Safety Gate

The dashboard in the affected vehicles may not have been manufactured to the manufacturer specifications. In the event of an accident, the passenger side airbag may not deploy as intended which could increase the risk of injury to the front passenger. The product does not comply with the Regulation on the approval and market surveillance of motor vehicles and their trailers, and of systems, components and separate technical units intended for such vehicles.

Remedy: Type of economic operator taking notified measure(s): Manufacturer Category of measure(s): Recall of the product from end users Date of entry into force: Unknown

We could not check this: model year. The authority's notice

A12/00996/24Safety recallInjuriesno date · EU Safety Gate

The integrated braking system could be compromised, which could lead to an unexpected failure of the hydraulic braking assistance, thereby requiring greater pressure on the brake pedal. This can result in a longer braking distance, as well as failure of the Anti-lock Braking System (ABS) and the Dynamic Stability Control (DSC), increasing the risk of an accident. The product does not comply with the Regulation on the approval and market surveillance of motor vehicles and their trailers, and of systems, components and separate technical units intended for such vehicles.

Remedy: Type of economic operator taking notified measure(s): Manufacturer Category of measure(s): Recall of the product from end users Date of entry into force: Unknown

We could not check this: model year. The authority's notice

A12/01235/20Safety recallInjuriesno date · EU Safety Gate

The inner liner of the tyres may have been damaged during the manufacturing process. This could cause a sudden loss of pressure while driving and thus a failure of the tyre, increasing the risk of an accident.

Remedy: Type of economic operator taking notified measure(s): Manufacturer Category of measure(s): Recall of the product from end users Date of entry into force: Unknown

We could not check this: model year. The authority's notice

A12/01855/20Safety recallInjuriesno date · EU Safety Gate

Due to defective welding, the push bars on the front axle beam may become detached. Moreover, a failure of the welding quality may result in a crack of the bearing bracket. This could lead to loss of wheel control, increasing the risk of an accident.

Remedy: Type of economic operator taking notified measure(s): Manufacturer Category of measure(s): Recall of the product from end users Date of entry into force: Unknown

We could not check this: model year. The authority's notice

A12/02134/23Safety recallInjuriesno date · EU Safety Gate

The gas generator in knee airbag modules was not properly inserted into the air cushion, resulting in the cushion failing to unfold sufficiently. As a result, it may not be able to deploy correctly in the event of an accident, leading to a reduction in the restraint effect, increasing the risk of injury to the occupants. The product does not comply with the Regulation on the approval and market surveillance of motor vehicles and their trailers, and of systems, components and separate technical units intended for such vehicles.

Remedy: Type of economic operator taking notified measure(s): Manufacturer Category of measure(s): Recall of the product from end users Date of entry into force: Unknown

We could not check this: model year. The authority's notice

A12/02466/24Safety recallFireno date · EU Safety Gate

The software-based overload protection function cannot sufficiently prevent the starter being overloaded in the event of repeated long start-up attempts. The starter may overheat or sparks may be produced as a result of an increased current flow. This increases the risk of a fire. The product does not comply with the Regulation on the approval and market surveillance of motor vehicles and their trailers, and of systems, components and separate technical units intended for such vehicles.

Remedy: Type of economic operator taking notified measure(s): Manufacturer Category of measure(s): Recall of the product from end users Date of entry into force: Unknown

We could not check this: model year. The authority's notice

A12/1325/19Safety recallInjuriesno date · EU Safety Gate

The nuts on the left-hand side wheels may not have been tightened in accordance with the specifications. This may cause a wheel to detach from the vehicle, increasing the risk of an accident.

Remedy: Type of economic operator taking notified measure(s): Manufacturer Category of measure(s): Recall of the product from end users Date of entry into force: Unknown

We could not check this: model year. The authority's notice

SR/00053/25Safety recallInjuriesno date · EU Safety Gate

The hollow shaft of the servomotor was not welded correctly. The weld may not be able to withstand high braking pressure build-up and may break. In this case, the reduced braking performance requires greater force and the braking distance may increase. In addition, the ABS and DSC brake control systems are not assisted. This increases the risk of an accident. The product does not comply with the Regulation on the approval and market surveillance of motor vehicles and their trailers, and of systems, components and separate technical units intended for such vehicles.

Remedy: Type of economic operator taking notified measure(s): Manufacturer Category of measure(s): Recall of the product from end users Date of entry into force: Unknown

We could not check this: model year. The authority's notice

SR/03823/25Safety recallFireno date · EU Safety Gate

The engine starter’s electrical contacts may overheat and cause the vehicle to start improperly. Continued starting attempts can intensify the overheating and ignite surrounding components, potentially leading to a vehicle fire while driving or shortly after parking. The product does not comply with the Regulation on the approval and market surveillance of motor vehicles and their trailers, and of systems, components and separate technical units intended for such vehicles.

Remedy: Type of economic operator taking notified measure(s): Manufacturer Category of measure(s): Recall of the product from end users Date of entry into force: Unknown

We could not check this: model year. The authority's notice

SR/03830/25Safety recallFireno date · EU Safety Gate

Water may come into contact with the starter relay and gradually cause corrosion. This could affect the electrical connection inside the relay and make the engine difficult to start. It may also result in a short circuit and could cause the starter to overheat leading to a fire when the vehicle is in motion or when it is parked with the ignition off. The product does not comply with the Regulation on the approval and market surveillance of motor vehicles and their trailers, and of systems, components and separate technical units intended for such vehicles.

Remedy: Type of economic operator taking notified measure(s): Manufacturer Category of measure(s): Recall of the product from end users Date of entry into force: Unknown

We could not check this: model year. The authority's notice

Engine and transmission

1 engines · 2 transmissions

N63B44T3

390 kW (530 HP) · petrol

ZF8HP75 · 8-speed automatic, longitudinal (ZF 8HP75)

automatic · 8 speed

Torque limit750 Nm
MakerZF

We built the code from the model and the gear count. The factory sheet does not state it. More than one transmission is possible. The gear count does not tell them apart. The code is on the side of the transmission.

Variant data

What is in this version

Factory data

Trim
X6 M50i
Body
SUV
Fuel
petrol
Transmission
automatic
Engine size
4395 cc
Power
390 kW (530 HP)
Drive
AWD
Production
2019–2023

Factory service interval

The manufacturer specifies this for this version. Of the mileage and the time, the one that comes first is the one that counts.

  • Air filter

    • 60,000 km or 4 years
  • Cabin (pollen) filter

    • 30,000 km or 2 years
  • Brake fluid change

    • first: 3 years, then 2 years(first change at 3 years, then every two years)
  • Engine oil and oil filter (BMW condition-based service)

    • LongLife25,000 km or 2 years
  • Spark plugs, petrol

    • 60,000 km or 6 years

Information, not an expert opinion

We write the descriptions, and we put the source next to them. A person reviews them before they go out. They are still information, not a technical expert opinion.

  • A fault on the list does not mean the car you are looking at has it.
  • A fault missing from the list does not mean the model is fault-free. Write-ups are made model by model. Not all of them are done.
  • You decide whether to buy. This is no substitute for an inspection. That needs a workshop and a history check.
Details in the terms