Three problems related to engine and engine cooling have been reported for the 2013 Mercedes Benz SL550. The most recently reported issues are listed below. Please also check out the statistics and reliability analysis of the 2013 Mercedes Benz SL550 based on all problems reported for the 2013 SL550.
I was driving on a country road when all of a sudden my car lost power all the warning lights camo on the dashboard. Smoke started billowing out from the back and front of the car. It turned off and I only coasted about a 100 feet. I could not safely pull off to the side of the road as the car had no power. Thankfully the road was not very busy and the tow truck collected the vehicle. Upon further inspection I saw a lot of oil on the road and the mechanics were able to confirm that the engine block was cracked and there were 2 large holes. Upon further research I was able to find a lot of similar cases with this specific m278 mercedes engine and premature failures that happen because of bad cylinder coating. In later engines they update the cylinder lining to a more durable steel sleeves. I think this is a very well documted issue and a huge safety risk. There is a class action lawsuit running about the m278 engine and I think you need to get involved and hold mercedes accountable for their poor design.
Cam sensor seals failed which leaked oil into the wire harness, O2 sensors, and ecm. This happens to be a common problem with m278 engine. The repair was $10,217 to fix this issue. The car would not pass emissions without this repair. Could oil into the electrical system pose a fire hazzard?.
The car suddenly slow down in highway goes to limp mode for example from 69 to 35 miles is very dangerous I have to get off the highway.
| Engine And Engine Cooling problems | |
| Engine Oil Leaking problems |