 I purchased 4 Mercedes in 2003, (2) ML500, (1) 500S and (1) E500  The ML500's had fuse box fans that squealed for a half hour in the morning.  Serious brake and tire problems.  Each ML required new tires at 25,000 miles. Each has had the brakes replaced twice in 46,000 miles.  ($1,400 for brakes)  At 53,000 miles the brakes squeal so bad they are embarrassing to drive.   Each has been in about a dozen times for various repairs.  Top dollar, inferior quality, design problems and miserable service.  Avoid these automobiles.  