One of the most common problems with a Mercedes C270 CDI is an irregular diesel leak. When the engine gets cold, a bit of the diesel droplets show up at the front of the engine. A non-functional air conditioner is also one of the complaints that have been reported. The diesel consumption can also suddenly drop which can be problematic for several reasons. Another complaint that can be seen is that the cruise control of the vehicle doesnt go above 60mph. This can occasionally happen if the tire sizes are not matched properly and is a pretty easy fix if You experience this. There could be any number of other problems with the vehicle but these are the ones which have been most commonly reported.
Lillie S
July 30, 2020
Most of the problems you will find with the mercedes c270 cdi will come from not maintaining the vehicle and can include engine failure, transmission failure, and wear and tear on the brakes. As long as you keep to the vehicles maintenance schedule however there should not be an abundance of issues. Other common issues can include bad brake pads, old oil in the system, or burned out wires. These things should be checked over if buying used.
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