SuspensionMedium
Front control arm bush knock over broken surfaces
- Typically appears
- 50,000+ miles
- What to inspect
- Drive a rough road and listen for a knock at low speed
2018–2025 BMW X4 · common problems & known faults
A coupe SUV bought on style, so tyres, brakes and suspension take the abuse buyers overlook.
Compiled & reviewed by the VehicleFaults Research Team · last reviewed August 2026
Quick answer
The most commonly reported faults on the 2018–2025 BMW X4 are Timing chain and turbo actuator faults on diesels, Front control arm bush knock over broken surfaces and Uneven wear from run flats and wide rear rubber. 1 of the documented issues are rated high severity · inspect these first. Full inspection points, onset mileage and what to check are listed below.
Reliability snapshot
Based on the documented faults on this page for the BMW X4.
7.3/ 10
- Critical
- 0
- High
- 1
- Medium
- 3
- Low
- 0
Guidance only · reflects reported patterns, not a specific car's condition.
BMW X4 problems by year
Which faults an average example has usually reached depends on its age. Pick a model year for the faults that matter on that build.
Known faults to check
TyresMedium
Uneven wear from run flats and wide rear rubber
- Typically appears
- 20,000+ miles
- What to inspect
- Measure tread inner and outer on all four corners
EngineHigh
Timing chain and turbo actuator faults on diesels
- Typically appears
- 80,000+ miles
- What to inspect
- Cold start and check for boost hesitation on the road
ElectricalMedium
iDrive and driver assistance camera calibration faults
- Typically appears
- Age-related
- What to inspect
- Test lane assist, cameras and parking sensors
Inspecting a BMW X4?
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Check this exact carFrequently asked questions
Is the X4 a safe used buy?
Yes with service history and honest tyre wear.
What do buyers complain about most?
Ride harshness and premature tyre wear on large wheels.
Any expensive surprise?
Chain work on high mileage diesels.
Sources & further reading
Faults are compiled from documented recalls, technical bulletins, owner reports and mechanic sources, then reviewed for accuracy. This is guidance only · not a substitute for a professional inspection.