Sadly, Mercedes made a transmission dud with the introduction of the 722.9 transmission. The 4matic box coupled to the 722.9 has output bearing oil starvation problem on the transfer case. 50k miles to 100k miles these cars are dropping like fly's. Also, not to mention the pump bearing failures on the 722.9 which is all over net...I repair transmissions. These are transmissions I really do not want to deal with...

Get your self a second generation W210 wagon 4-matic or a non 4-matic(2000 to 2002) with a M112 engine and a 722.6 transmission. The car is bullet proof...

Martin