Something is wrong. I had a 2000 S4 2.7 T Quattro and that thing was just unstoppable. Up until recently, BMW's xDrive system was archaic compared to Quattro. You now look at the system being introduced in the new RS5 and it's pretty cutting edge. I'd say the current X6 and S4 systems with active rear differentials are both very impressive.
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2006 BMW M5 Sedan
SMG III
Silverstone Metallic/Black Perforated Merino/Aluminum,
X2/4MA/610/322/453/655/416/465/261/496
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