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.

The F15 X5 is a luxury SUV; coolant leaks, oil-filter-housing gaskets and (on V8) oil consumption are the checks.
Compiled & reviewed by the VehicleFaults Research Team · last reviewed July 2026
The most commonly reported faults on the 2014–2018 BMW X5 are Coolant leaks from the expansion tank / hoses, N63 V8 oil consumption on 50i models and Oil-filter-housing gasket leak. 2 of the documented issues are rated high severity · inspect these first. Full inspection points, onset mileage and what to check are listed below.
Based on the documented faults on this page for the BMW X5.
Guidance only · reflects reported patterns, not a specific car's condition.
Which faults an average example has usually reached depends on its age. Pick a model year for the faults that matter on that build.
Coolant leaks from the expansion tank / hoses.
Oil-filter-housing gasket leak.
N63 V8 oil consumption on 50i models.
Optional air suspension wear / leaks.
Generate a full, tickable pre-purchase checklist tailored to this exact vehicle · add photos and notes as you inspect. Try it free.
Check this exact carComfortable but costly to maintain; cooling and oil leaks are common.
The N63 can consume oil; monitor closely on 50i models.
It can leak with age; check ride height and compressor operation.
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.