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BMW X6 M X6 M common faults.

2019–2023, SUV, petrol, 600 HP.

The fault list covers: S63B44B engine.

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1 fault write-ups. Important. 11 recalls.

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

Before you buy

Known faults

1 important faults

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.

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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

Checklist

BMW X6 M X6 M

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 recall11 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

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

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.

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.

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

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

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

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

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

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

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

The authority's notice

Engine and transmission

S63B44B

441–460 kW (600–625 HP) · petrol

We built the code from the model and the gear count. The factory sheet does not state it.

Variant data

What is in this version

Factory data

Trim
X6 M
Body
SUV
Fuel
petrol
Transmission
automatic
Engine size
4395 cc
Power
441 kW (600 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