Could the OM617 be the most reliable automobile engine ever made? A very good case could be made for it, although its successors haven't been around long enough for us to judge whether they might be ...

The inline-6 is a common enough gas engine design, but it's pretty much universal in the diesel world. As such, there are ...

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 ...

The Mercedes-Benz W123 was built for the 1976 through 1985 model years, and it was a huge sales success. You'll see examples of the W123 still driving every day, all over the world, and the most ...

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.