My brother has an A8 with that w12 motor in it. He just paid $2,100 to get one front strut replaced. (self leveling)

It is really fast, and has a small ref in the back. other than that, i call it a waste.

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Eugene

10 E63 AMG
93 300te 4matic
07 BMW X3
14 Ford F-150 Fx2