One problem related to engine has been reported for the 2007 Mercedes Benz CLS550. The most recently reported issues are listed below.
Catastrophic failure with sudden loss of power and inability to proceed at more than 20 mph. It has now recurred twice and vehicle flatbedded to agency. Has been in shop for six days with no repair. Service manager denies that this is the second failure because his diagnostics were unable to determine the problem the first time.