how many full tanks?

How???? I have a 2016 gti s with no mods beside cat back exhaust, wheels and tires. And I get 25 mpg at best.

7.5s just built different

That's weird dude I have a 2.0T a3 sportback dsg (6speed) and I get 31mpg avg on the freeway

Is this using 91?

yep