Credov's researched list of the 2 faults the Mercedes-Benz M-Class is known for (2005–2011), 2 of them serious or costly. Each one says what to look for when you check the car, so you can spot it before you buy. Not every car has these faults: they are the ones worth checking on this model.
What to look for: If possible see the car after it has sat overnight, and check every corner sits level at the same height.
Why it matters: A leaking strut makes that corner drop after parking and the compressor run far longer to compensate, which eventually burns the compressor out too, turning a strut repair into a bigger bill.
What to look for: Lift the boot floor and side panels and feel for damp carpet, and check every rear light and lock works.
Why it matters: Water damage to the rear SAM causes strange electrical faults - rear lights, central locking or the fuel pump cutting out - and repeats if the source leak is not found and fixed first.
Got a question about a Mercedes-Benz M-Class? Ask Credov: a noise, a warning light, a part or how to fix it.
On top of the faults above, every Credov inspection covers the basics: fuel smell, leaks or filler rust, engine oil leaks, power steering fluid leak, drive belt cracks or squeal, rust underneath: chassis and mounts, engine mounts, engine oil level and colour, coolant level, colour and leaks, head gasket failure signs, cold start: rattle, knock or smoke, rough or hunting idle, engine running hot on gauge, gearbox or diff oil leak, swapped gearbox without lvv and more.
Researched by Credov from manufacturer recalls and service bulletins, owner reports and workshop sources. Repair prices are typical ranges, not quotes. See also fault codes and repair costs.