The most common 2008 Merceds R320 CDI problems are transmission problems as well as issues with the suspension. Either of these options will exhibit different symptoms when they are going bad. Usually if the transmission is having problems You may notice excessive noise coming from it. Transmission problems can also exhibit themselves by shifting rough between gears or feeling like it is hunting for a gear. The most common suspension problems on the R320 are the bushings for the control arms. These have been known to wear out early and that will lead to the suspension being loose and noisy. I recommend getting them changed if You notice them failing because it can prevent excessive damage to the suspension.
Porter C
July 16, 2020
There are not any specific issues with the 2008 mercedes r320 cdi, however due to the age of the vehicle it is likely there will be issues with the engine or transmission. Rust or damaged metal could have set in over time. Likewise the brake lines and other fluid lines should be checked for dry rot and leaks. Brake pads will likely need to be replaced and tires should be checked for age and rot. The oil and oil pump should be checked for rot on the lines, and cracks in the pan. There may also be dead or damaged wires and blown fuse causing electrical problems throughout the vehicle.
The Questions and Answers on this page are the statements and opinions of their respective authors and not VehicleHistory.com. VehicleHistory.com
does not research or authenticate any of the Answers provided.