For the record, I drive an 07' Mazda 6 with a 2.3L 4 cylinder. You'd think it'd sip gas right?
Nope. I managed a grand total of 18.5 MPG my last fill up. When I tone down my driving I can get maybe 20/gal, but I've also gotten as low as 15/16 MPG.
In 20K miles my brakes & front tires are both almost shot, but that's because these are the roads I drive for my daily commute. I have some awesome pictures at home, so these crappy ones will have to do for now. God it's fun!