Mercedes R350 4matic year 2007, current 80000 miles. 1/ first issue around 20000 miles, ac is not working when used for long hours of driving. Need to stop the vehicle and turn off eng and restart eng then turn ac back on to make it work again. Happend till now 80000 miles. Noise come from all 4 doors due to the gap seal of the all door vibration while driving. 2/ around 40000 miles, power sw window on driver side come off at all 4 buttons just like a pcs knock off of toy. 3/ auto power trunk is not working, belt tenssion pulley broke at 50000 miles. 4/ front brakepad replace every 30000 miles + front rotor replace at 60000 miles, rearpad at 40000 miles. 5/ 70000 miles rear left air shock leak + 78000 miles rear right air shock leak + power sterring leak due to seal ring broke + 77000 miles oil cam plug broke then oil leaking. 6/ 78000 miles a big problem come up: Transmission is not shifting anymore and stuck at low gear (valve body service time) if you dont want to replace a whole new 7 gears transmission. 7/ 78000 miles intake manifold flap arm broken then eng light pop up. This is a not reliable vehicle to drive and worthless of $55000. Please do some research before buy this type of vehicle. So many repeats problem from car owner.....

- San Jose, CA, USA