I've noticed that my drive to work is netting me some extra distance. I think I pay $15-20 more per full tank than I did for my SRT-4. The SRT-4 did 28-32 mpg and my XF is doin' about 33-35 (SRT-4 47L tank / XF 60L tank). However, my drive to work is all paved back roads where the max speed is 60 kph and heavily policed.

But then again, I bought the car for the 2 seat aspect and the head turning action. Gas mileage be damned. Get me on the expressway and it's about 25 mpg (We Canadians don't get the nice speeds you Americans get)