Which W124 engine is the most reliable?
These mercedes-benz w124 diesel engines are legendary for their indestructibility – mileages of over 500,000 kilometers without an engine overhaul are not uncommon. The om606 in particular, with its indirect injection and robust design, developed into the most reliable engine of the entire series. Mercedes-benz w124 engines (1984-1997) the absolute top engine of this generation was the 300d with the legendary om606 engine – a six-cylinder diesel that is regarded as one of the best diesel engines of all time.