in my RS-T i get 343ish and thats with RA gears and all the bolt on turbo parts you can think of......when i run chevron (im forced to when there is no other station close by) i get 260 at most....... even in the N/A 2011 fozz my mpg goes from 26 to 20 with chevron

 

I'm getting between 250-300 on my '11, all stock.

 

400 miles/tankful. Stock. Mostly Highway

 

Last tank 300 I didn't have to do the morning and afternoon commute 4 of the days driving 60 mph to work is better than 5

 

203miles at 1/4 left. About 22 mpg

 

313 on my '11 before the gas light came on

kevin