Symptom Definition
WARNING: This page is about a different car, the 2003 Cadillac Seville and 2003 Cadillac DeVille. 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.