they way you drive will make a difference, but you might need new O2 sensors. I when one went on my car I noticed the change in gas milage well before the CEL came on to say the O2 Sensor was bad. The sensor cost about 50 miles per tank
- 95 Mystique LS - Zetec/5spd
- 99 Contour SeVT Sport - Duratec/5spd
Official NE-CEG Contour/Mustang Family
