Symptom Definition
WARNING: This page is about a different car, the 2003 Pontiac Grand Prix, 2003 Chevrolet Malibu, and 2003 Buick Century. However, it is still accessible from the selected car via links, so may be relevant.
Fuel economy, as measured by an actual road test is noticeably lower than expected. Also, the economy is noticeably lower than the economy was on this vehicle at one time, as previously shown by an actual road test.