ElectricalLow
COMAND infotainment glitches and freezes.
Infotainment repair or software fix£120–£1,200
Inspect · Test the screen, navigation, and Bluetooth thoroughly.
2015–2021 Mercedes-Benz C-Class · common fault repair costs
What the known faults on this Mercedes-Benz C-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
- £520
- Worst case, everything
- £3,800
The single priciest documented job on the 2015–2021 Mercedes-Benz C-Class is infotainment repair or software fix at £120–£1,200. Few cars need every repair listed here · treat £700–£3,800 as the full exposure if one arrived with all of them.
Cost per fault
SuspensionMedium
Airmatic / adaptive damping faults on so-equipped cars.
Suspension refresh (per axle)£250–£1,100
Inspect · Confirm the ride height is even and no suspension warnings appear.
BodyMedium
Panoramic sunroof rattles or water leaks.
Water-ingress trace & seal£150–£800
Inspect · Check headliner for staining and run water tests; listen for rattles over bumps.
EngineMedium
Oil leaks from the valve cover and oil filter housing.
Oil leak trace & seal / gasket£180–£700
Inspect · Inspect the engine bay for oil residue.
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 C-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.