Originally Posted by AndreyATC
Whoever of you guys saying that 550i is more powerfull is wrong
This new S6 does 0-60 in 3.7 and traps 1/4 mile in 12.1 @ 118mph
There is no way in hell this engine producing little over 400hp
This V8TT is seriously underrated
P.S. In case you cared, it's rated at 27MPG highway
Motor Trend tested the S8 (same engine as the S6). It dynoed 479HP and 422lb tq. With 20% AWD drivetrain loss, the crank is estimated at 575HP and 506lb ft of tq. Yes, Audi is clearly underrated the crank power.