Discover the secrets behind the legendary durability of the Cummins 6BT and Mercedes OM617 diesel engines, and why they'll never stop ticking over.

When a vehicle is an appliance, reliability is crucial, and while we've already dealt with the most reliable cars ever made, today we're highlighting the most reliable engines ever made. It's ...

I love the OM617 and its 4 potted brother, the 616, for their sound. Imo much better than the modern diesel engines. The question whether it is beneficial to use something longer or replace it early ...

We may receive a commission on purchases made from links. Given the numerous advantages diesel engines offer, it's puzzling why they are almost non-existent in cars today. Yes, the Volkswagen ...

The Mercedes-Benz W123 series was one of the most successful model lines in the history of the brand, with almost 2.7 million units built between 1976 and 1985, when it was replaced by the W124.