CoolingHigh
Coolant leaks from the expansion tank / hoses.
- Typically appears
- 70,000+ miles
- What to inspect
- Check for coolant loss and residue; test the cooling system.
- Typical repair
- Head gasket / cooling system repair · £900–£2,600
Is the 2014–2018 BMW X5 reliable?
Scored from 8 documented faults · reviewed by the VehicleFaults Research Team
Quick answer
3.4/ 10
Buy with cautionOn our documented-fault scoring the BMW X5 rates 3.4 out of 10 · buy with caution. We hold 8 known faults for it and 4 are rated high severity, so the risk is real but contained. The weak points cluster around engine, cooling and suspension. A well-serviced example with evidence for the big-ticket items is usually a safe buy; the score describes the model, not the specific car in front of you.
Verdict · Walk unless the history is spotless
What the score is built from
- Critical
- 0
- High
- 4
- Medium
- 4
- Low
- 0
Weak points cluster around engine, cooling, suspension, engine / exhaust.
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EngineHigh
N63 V8 oil consumption on 50i models.
- Typically appears
- 60,000+ miles
- What to inspect
- Check oil level and consumption history on V8 cars.
- Typical repair
- Oil leak trace & seal / gasket · £180–£700
Engine / ExhaustHigh
Internal coolant loss and potential fire risk due to EGR cooler cracking, triggering a drivetrain warning.
- Typically appears
- 40,000-80,000 miles
- What to inspect
- Remove the acoustic engine cover and inspect the EGR cooler for white, chalky residue. Check the iDrive 'Vehicle Status' for low coolant warnings.
- Typical repair
- EGR valve / cooler replacement · £300–£900
DrivetrainHigh
Judder, hesitation, or binding sensation during low-speed manoeuvres or moderate acceleration due to worn transfer box clutches.
- Typically appears
- 60,000-100,000 miles
- What to inspect
- Perform a tight figure-of-eight manoeuvre on the forecourt at low speed on full lock. Feel for any skipping, binding, or juddering through the floorpan.
- Typical repair
- Clutch & dual-mass flywheel · £700–£1,600
EngineMedium
Oil-filter-housing gasket leak.
- Typically appears
- 70,000+ miles
- What to inspect
- Look for oil around the filter housing.
- Typical repair
- Water-ingress trace & seal · £150–£800
Costs are indicative UK independent-garage bands for budgeting and negotiation · never a quote.
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