14 combined driving. 3-5 at the track. 21 gal capacity. Has fattened ECU to match the 20% OD on the pulley.Best? Hmm. Not for the faint of heart, but quite acceptable for me, and especially for the frickin monster M156 under the hood.
Should not even be getting what I've noticed with no fancy stop/start, cylinder deactivation. Not to mention, is it even direct injection? (Okay, okay! I should know that.)
But first off, those gas guzzler tax grubbin EPA mileage testers are exactly that, as 13/19 city-highway - in my experience - is clearly driving in Sport mode....................quite HARD. Anyway, here's what I get driving like a civilized human:
Comfort mode: 18/21 city-hwy.
Manual: Pretty damn bad; nobody cares; crazy fun.
My only complaint? 17.4 gallon tank. Gimme 20.