Transfer Case Failure (xDrive)
SeriousGearbox & TransmissionThe transfer case wears quickly if tyre circumferences differ or the fluid is never changed, leading to expensive judder and shunt under acceleration.
Most affected: xDrive20d, xDrive30d, xDrive35d
Typical symptoms
- •Judder when accelerating from low speed
- •Full-lock shunt in car parks
- •4x4 or drivetrain warning lights
What to inspect before you buy
- ✓Inspect all four tyre brands and tread depths
- ✓Drive on full lock both directions
- ✓Ask about transfer-case fluid changes or previous adaptation resets