quattro vi

[Dave]

quattro "vi" (or is it quattro v?) aka quattro with an fully active rear
diff (operational under both power and braking) debuts in a real car.  seems
like a very nice development.

georg kacher likes it.

http://www.carmagazine.co.uk/Drives/Search-Results/First-drives/Audi-S4-salo
on-2008-CAR-review/

dave
'03 rs6
'04 allroad tdi