Audi’s 2012 S7 and 2013 S6: 4.0-Liter Twin-Turbo V-8, 420 Hp Comments Off on Audi’s 2012 S7 and 2013 S6: 4.0-Liter Twin-Turbo V-8, 420 Hp 774 Views It would be a prodigious understatement to say that Audi is firing on all cylinders these days. Read More »