The A8 3.0T uses a supercharged V6 while the 4.0T Sport gets a turbocharged V8, both of which have fuel-saving start/stop technology. EPA city/highway fuel economy: 19/29 mpg 2017 Audi S5 Need MPG information on the 2012 Audi S5? Visit Cars.com and get the latest information, as well as detailed specs and features. Gas V8: Displacement: 4.2L/254: SAE Net Horsepower @ RPM: 354 Audi S5 2008 4.2 issues at startup. I have a 2008 S5 4.2 in the shop witch im having issues figuring out. Every single time you start the car it idles like crap Missfires ( CEL flashing sometimes, sometimes not ) runs really rough The customer even said he saw the EPC light come on ( I havent ) Sometyimes the CEL comes on sometimes not. See pricing for the Used 2008 Audi S5 Quattro Coupe 2D. Get KBB Fair Purchase Price, MSRP, and dealer invoice price for the 2008 Audi S5 Quattro Coupe 2D. V8, 4.2 Liter. Horsepower. 354 @ 6800 What is the fuel economy, Audi RS 4 Avant (B8) (facelift 2011) 4.2 FSI V8 (450 Hp) quattro S tronic? 10.7 l/100 km 21.98 US mpg 26.4 UK mpg 9.35 km/l: How ECO is the car, Audi RS 4 4.2 FSI V8 (450 Hp) quattro S tronic? 249 g/km CO 2 Euro 5: How fast is the car, 2012 RS 4 Avant (B8) (facelift 2011) 4.2 FSI V8 (450 Hp) quattro S tronic? . 384 303 301 422 92 285 335 265

audi s5 4.2 v8 fuel consumption