OK
Anyone can take a pic and add gas to make it how they want. Even pics is useless.
My parents rented a 06 grand prix last year to go to dayton, OH for the air force museum. We followed in my crown vic. We both figured out gas mileage and my vic got 3 mpg better than the grand prix. I am surprised at the mileage also, but after looking at a few crown vic message boards, it seems to be pretty common. And yes, there are message boards for the crown vic. :D:D:D