I have close to 70,000 miles on this ML55 and I didn't have any problems with it. Very fine detail in the leather interior front seats, lots of punch in the engine when you need it most, and the transmission has very smooth shifting. Brakes are great but make sure you use ceramic pads or the wheels will get dirty. Anyone who wants performance will have to pay for it at the pump so don't think it's free. If you drive expensive cars you'll pay for it. I'm very happy, It's an A+.