i've had the car 2 years in april. I drive mostly highway to work 30 miles one way. Even this past summer i notice my gas miles down some but i thought it was because i bought a new set of rims and they were 15" instead of the 14" that came with the car. But still i was getting around 36 mpg. Now i got studded snows on an that could cuase a drop in mpg.