Hi all. I have a Protege5 wagon with the auto transmission. The car has a 4 cyl,2.0 engine. The best MPG i got was like 22MPG city hwy mix. with NO USE of the A/C, prolong idle, fan,or opening of windows. normally i get like 18-20 MPG with some A/C. also i drive like my grandmother, so i really don't know what else i can do to bump up my MPG. here's some info on my car: 2002 mazda protege5 auto with 42,000 miles. Mobil1 oil+ATF, New air filter, tires to 38PSI,ngk GP plugs.