Originally Posted by UNKNOWN_370

I know I'm in a lowly SS. but on the highway. If I do 75 at cruise I get up to 32mpg. If I leave cruise on at 85mph I get about 25mpg. If I cruise at 100mph I get about 19mpg.

To get good mileage city driving you gotta leave it in auto. You can get about 18mpg on a cool day and 15 to 16 mpg on a hot day. If i switch gears and are hooning around I'll get somewhere around 13mpg. For a 6.2ltr v8 that at this moment I'm at 444.3 rwhp/510bhp I think I'm getting great mileage.

I'm expecting the same from the C8