There are engines with reputations for being able to rack up over 500,000 miles with steady maintenance. Among those, Mercedes-Benz and its diesel engines are legendary. Here, we look at one of them ...

Mercedes introduced the W123 to European markets in sedan form in 1976. It was the next step beyond the W114 and W115 coupes and sedans that had been around since 1967. Two years later, a station ...

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 ...