ElectricalLow
Infotainment and keyless entry faults
Infotainment repair or software fix£120–£1,200
Inspect · Test every screen and door handle
2011–2015 Mercedes-Benz M-Class · common fault repair costs
What the known faults on this Mercedes-Benz M-Class 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
- £120–£1,200
- Top three risks, from
- £490
- Worst case, everything
- £5,400
The single priciest documented job on the 2011–2015 Mercedes-Benz M-Class is infotainment repair or software fix at £120–£1,200. Few cars need every repair listed here · treat £960–£5,400 as the full exposure if one arrived with all of them.
Cost per fault
SuspensionHigh
Airmatic air suspension leaks on cars fitted with it
Suspension refresh (per axle)£250–£1,100
Inspect · Check the car stays level after standing
EngineHigh
ML250 and ML350 diesel AdBlue and NOx sensor faults
Electrical diagnosis & module repair£120–£900
Inspect · Check for AdBlue warnings and a restart countdown
BrakesLow
Front discs and pads wearing quickly due to weight
Brakes (discs, pads, caliper)£200–£800
Inspect · Check disc lips and pad depth
EngineMedium
Oil leaks from the oil cooler and cam covers
Oil leak trace & seal / gasket£180–£700
Inspect · Look under the engine for fresh oil
TransmissionMedium
7G-Tronic gearbox harsh shifts and conductor plate faults
Diagnostics & follow-on repair£90–£700
Inspect · Feel for clunks and check for gearbox warning lights
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 Mercedes-Benz M-Class this week?
Build a tickable checklist for the exact car in front of you, record faults with photos, and hand the buyer a report.