 Motor was replaced at 20,000 miles.  
Repeated transmission leaks, Power 
stearing went out, windows failed 
several times, goo smeared up the 
windows from inside the door the first 
summer, sun roof failed, 
numerous "check engine" lights (in 
addition to that listed above) 
requiring trips to the dealer for 
repair.  A/C is inadequate for the size 
of the vehicle (corrected in later year 
models)  
 Mercedes' mechanics and customer 
service has been excellent.  They 
certainly get enough practice with the 
M-Class.