KNOWN FAULTS · Mercedes-Benz

Known faults for the Mercedes-Benz Clase G (W463).

2000–2018 · Diesel / Petrol

Sources are not verified in real time and no entry confirms that your car is affected.

2 known faults with sources

Engines: G 270 / 320 CDI (Diesel) · G 320 / 350 CDI (OM642, desde 2006) (Diesel) · G 500 / G 55 / G 63 (Petrol)

Applies if: Weak points of this model from inspections, breakdown statistics and recalls; anything specific to one engine is stated in the sheet.

Suspension, rust, injection and turbos on the G-Class W463Known weak points

Engine / equipment: Mercedes G-Class W463 (diesel and petrol)
Period mentioned: 1990–2018
Symptoms: Wear of shock absorbers, springs, steering arms and track-rod ends; rust on window frames and tailgate; water in headlamps and indicators; on the G 400 CDI, the high-pressure pump (2001–2005), chain and injectors; turbos with mileage; engine control unit.
Possible cause described: A hard-used, long-lived car: the German summary notes that bodywork, chain and injector repairs are expensive and that the control unit usually has to be replaced whole.
Check for the garage: Check rust on frames and tailgate, front-axle play and headlamps; change the oil on time with the correct specification.
Cost cited in the source: No verified estimate; ask the garage for a quote.A rough figure from the original database, not an up-to-date quote.

Engines: G 320 / 350 CDI (OM642, desde 2006) (Diesel)

Oil cooler and injector leaksOil leaks / injectors

Engine / equipment: OM642 3.0 V6 CDI/BlueTEC (280/300/320/350 CDI, ML, GL, R, Sprinter)
Period mentioned: 2005 onwards
Symptoms: Oil pooling in the engine's V, burning oil smell, drips under the engine; or a hiss or chirp next to an injector with an exhaust smell.
Possible cause described: The oil cooler seals (in the engine's V) degrade. Separately, injector washers leak combustion gas and carbon builds up around the injector.
Check for the garage: Visual inspection of the engine's V and the base of the injectors.
Cost cited in the source: Oil cooler seals: labour-heavy, approx. €800–1,800 (estimate)A rough figure from the original database, not an up-to-date quote.