Is the 17/26 rating for a G37 with a 7-speed transmission? If so, that does not seem like too much of an improvement over 17/24.
Not to speak for him.... but... to reply for him..
It was A5 vs G37. I am pretty sure he was looking at the current G37's gas mileage, and he was likely referring to the MT, not the AT. Even then, the 7 spd AT isn't out yet for the G37 (coupe) I dont think?