EngineHigh
Timing chain and turbo oil feed wear on diesel sixes
Timing chain, tensioner & guides£900–£2,400
Inspect · Cold start listen and check for oil leaks at the turbo
2015–2022 BMW 7 Series · common fault repair costs
What the known faults on this BMW 7 Series typically cost to put right at a UK independent garage · use the figures to price risk before you bid, and to justify a reduction when something shows up on inspection.
Cost at a glance
- Most expensive fault
- £900–£2,400
- Top three risks, from
- £1,270
- Worst case, everything
- £5,450
The single priciest documented job on the 2015–2022 BMW 7 Series is timing chain, tensioner & guides at £900–£2,400. Few cars need every repair listed here · treat £1,490–£5,450 as the full exposure if one arrived with all of them.
Cost per fault
ElectricalMedium
Comfort access, gesture control and display glitches
Infotainment repair or software fix£120–£1,200
Inspect · Test every door handle, screen and driver assist feature
SuspensionHigh
Air suspension compressor and bag failures
Suspension refresh (per axle)£250–£1,100
Inspect · Check for sagging and listen for a labouring compressor
CoolingHigh
Water pump and thermostat failures
Cooling component replacement£220–£750
Inspect · Run to temperature and watch the gauge and coolant level
Ranges are indicative parts-and-labour costs at a UK independent garage, inclusive of VAT. Franchised dealers typically sit 40–80% higher, and prestige or electrified variants sit at the top of each band. Always get a written quote before committing.
Inspecting a BMW 7 Series this week?
Build a tickable checklist for the exact car in front of you, record faults with photos, and hand the buyer a report.