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W205 Sedan · Estate · Coupe · Cabrio

Mercedes-Benz C-Class · Sedan · Estate · Coupe · Cabrio · 2014–2021

Twin-turbo V8 C63 and the first 48V-adjacent tech.

Production run

2014–2021

Engines covered

5

Avg. part price

—

19902026

Interactive systems map

Inspect the W205

Tap a hotspot to inspect that system

Systems map

Where it goes wrong

Each numbered hotspot counts the documented failure points in that area. Select one to see the specifics for this chassis and engine.

Failure points by system

Engine3

Cooling2

Fuel3

Exhaust2

Documented issues per engine

4

M274

4

M276

4

M177

4

OM651

4

OM654

Known weak points

What breaks on the W205

Timing chain stretch on early unitsDiagnose →Water pumpDiagnose →Camshaft adjuster / magnet faultsDiagnose →Oil separatorDiagnose →Heat managementDiagnose →Coolant pumpDiagnose →Injector failuresDiagnose →Timing chain (early)Diagnose →AdBlue systemDiagnose →DPF regeneration on short runsDiagnose →

Guides & playbooks

W205 playbooks

Maintenance scheduleGive me a mileage-based maintenance schedule for a Mercedes-Benz C-Class W205, including the items the factory schedule skips.Buyer's inspectionI'm inspecting a used Mercedes-Benz C-Class W205. What exactly should I check, test drive and look for underneath?Build planPlan a staged performance build for a Mercedes-Benz C-Class W205 that stays reliable as a daily driver.Fault code lookupI have a fault code on my Mercedes-Benz C-Class W205. Walk me through what it means and how to confirm the cause.

Fits your W205

Parts & tools

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