IN THE YEARS FOLLOWING the introduction of the 4-cylinder diesel engine for the Volkswagen Rabbit 5- and 6-cylinder diesel engines were developed for passenger cars and light duty trucks. As in the 4-cylinder version these engines employ the swirl chamber process. They are in-line OHC configurations with bucket tappets and with the valves being parallel to the cylinder axis. Cylinder volume is 400 cm3. For the passenger car version power output of the 5-cylinder engine is 50 kW, and 60 kW for the 6-cylinder engine both at a rated speed of 4800 rpm. Cast iron cylinder blocks and aluminum cylinder heads are used.The paper describes the basic design, development highlights and gives the performance characteristics such as of power, durability, emissions and fuel economy.