The Mercedes-Benz R 320 CDI 4MATIC was a variant of the R-Class that was introduced for the 2007 model year. The R320 CDI 4MATIC was powered by Mercedes´ OM 642 DE 30 LA wich was a 3.0L V6 engine that produced 221hp and 376 lb⋅ft of torque. This power was sent to all four wheels through a 7 speed automatic transmission. Over the course of production, the R 320 CDI 4MATIC was also available in a rear wheel drive version known as the R320 CDI. The Mercedes-Benz R320 CDI 4MATIC was built until 2009 when the model was discontinued.