 My ML 320 has never let me down. No major repairs, only routine maintenance. I have yet to see the "service engine soon" light come on. Performance, safety, and winter handling are unbeatable. This vehicle is glued to the road in any conditions! I still average 24 mpg on the highway at 70 mph (22 mpg at 80 mph)! My only complaints are with the interior. My rearview mirror adjustment knob popped off and I have not been able to find it. Well, what can you expect when the Germans hired someone else to engineer the interior? I am not disappointed, the interior it is still good, it just doesn't live up to the quality of the rest of the vehicle. 