The W124 was a mid-sized car produced from 1984 until 1995. Much of the 124's engineering and many of its features were advanced automotive technology at its introduction, incorporating innovations that have been adopted throughout the industry.
From 1991 to 1994, Mercedes-Benz sold a high-performance version of the W124, the 500 E wich was created in close cooperation with Porsche. With its engineering department being fully occupied with the development of the new S-class, Mercedes-Benz commissioned Porsche in 1989 to redesign the W124 chassis to shoehorn the 5.0 L V8 used in the SL, along with the necessary changes on the suspension system and drive train. When the car was ready, it was found that its widened fenders didn't fit through the W124 assembly line in Sindelfingen in three places. Hence Porsche was also commissioned to assemble the car. As a side-effect this arrangement provided workload for Porsche's plant, as the company was in crisis at the time, and its factory capacitiy was underutilized.