My S7 is my daily driver. Put in service 5/22/15, now with 60K on it. Live in SoCal where my commute is 100 miles a day. Typical gas mileage on SoCal freeways which are stop and go 60 percent of the time in rush hour, and driving 85 mph 30% of the time, my mileage is about 21.9-22.7 mpg. I haven’t been using the auto shut off as much as I should so I’m going to use it more often and see how much better it might get. But I never bought this car for the gas mileage. It’s a dream to drive.

2016 S7 panther black crystal effect(special order), carbon fiber interior, contour massage seats, B&O speakers (well worth it to me), all the options except night display and alcantara headliner (which I hate so I didn’t get it)

My mileage ‘16 S7
 

i get mid to high teens in pure, semi-aggressive city driving in Denver. On the highway I’ve gotten as much as 27 on a cross country trip but typically am more like 24. I have never been able to tell the difference in v4 vs v8 mode. I love this car and quite frankly have always been amazed by the power when I want it and the fuel economy in general. Really an amazing machine.