My car is messing with my emotions this morning. At one point it said 29MPG. I only have around 325 miles on the ODO on my new hatchback '13. That was just from this morning though, on average it says I get between 21-24MPG. Although I calculated my MPG at the pump on my first fillup I average 23MPG, just 1 below what the meter in my car said I was getting.