IsItAGoodCar
Reliability Guide

Common Problems with the
2021 BMW X5 (G05)

We've identified 4 known issues that can affect the 2021 BMW X5 (G05). 3 of these are serious faults that could be expensive to repair.

4
Known Issues
3
Serious
1
Moderate
0
Minor

All Known Issues

Air Suspension Bellows & Compressor

SeriousSuspension & Chassis

The air springs can develop hairline cracks, causing slow leaks. If ignored, the compressor burns out trying to compensate.

Est. Repair Cost: £600–£1,500
Warning Signs:

Car sagging on one corner after being parked, Unusually loud compressor noise, Chassis restricted warning on the iDrive

What to Inspect:
  • Measure the gap between tyre and arch on all four corners after the car has sat
  • Cycle the ride height through all levels and check for speed and smooth transition
Verified by IsItAGoodCar Research TeamUpdated

xDrive Transfer Case Shudder

SeriousGearbox & Transmission

A well-known issue where the transfer case fluid degrades, causing a shuddering or "binding" sensation during tight, low-speed turns.

Est. Repair Cost: £300 (Fluid) – £3,000 (Unit)
Warning Signs:

Shuddering or vibration when pulling away on full lock, Hesitation under hard acceleration from a standstill

What to Inspect:
  • Perform several tight figure-of-eight turns in a car park
  • Ensure all four tyres are the same brand and have similar tread depths
Verified by IsItAGoodCar Research TeamUpdated

Integrated Braking System (IBS) Recall

SeriousBrakes

A major safety recall affects the braking assistance unit. Failure can result in a loss of power braking, requiring significant physical effort to stop the vehicle.

Est. Repair Cost: £0 (Recall)
Warning Signs:

Brake warning light (yellow or red), Hard brake pedal, ABS and stability control failure messages

What to Inspect:
  • Check the recall status via the UK Gov or BMW websites
  • Look for dealer stamps confirming the "Integrated Brake" campaign is closed
Verified by IsItAGoodCar Research TeamUpdated
Official Recalls & Reference Documents:

Lower Tailgate Spindle Drive Failure

ModerateBodywork & Rust

The electric motors for the lower half of the split tailgate can fail or lose synchronization, preventing the boot from closing properly.

Est. Repair Cost: £300–£600
Warning Signs:

Lower tailgate refusing to move, Clicking or grinding noise when the boot opens, Boot open warning on the dash despite being closed

What to Inspect:
  • Operate the split tailgate several times using the button and the key fob
  • Check for any obstructions or damage to the spindle covers
Verified by IsItAGoodCar Research TeamUpdated

Buying Tips for 2021 BMW X5 (G05)

  • Test the complex air suspension by raising and lowering it fully; ensure the compressor isn't excessively loud and there are no dashboard warnings.
  • On the 45e/50e PHEV models, check the real-world battery range and ensure the charging flap mechanism isn't jammed or broken.
  • Inspect the massive alloy wheels for kerb damage and check the tyre tread depth; replacing premium 21-inch or 22-inch tyres is exceptionally expensive.
  • Verify the dual-screen iDrive system doesn't lag or freeze, ensuring the car has received the latest OTA software updates.
  • Check the split-folding tailgate mechanism; the lower section is motorized and can fail if loaded too heavily or forced closed.
  • Ensure the active safety systems (cameras, radars) are clean and functional, as replacing a damaged front radar unit costs thousands.
Check a 2021 BMW X5 (G05) by Registration