yes the R8 concept is only that for now because that cars chassis is so well balanced as a supercar and that V12 Diesel is quite alot heavier that the V8 or V10 so the cars sweet handling would of been severely compromised
In a recent road test in an Australian Motoring magazine the V12 q7 run a 13.6 1/4 mile @ 108 mph 0-60mph 5.2 sec with 2 passengers on board & less than 3000km on the speedo. Red line is 4800rpm although its limiter is set @ 4600rpm & its theoretical top speed is 170-5mph @ 4600rpm with speed...