Poor Fuel Economy

Definition: Fuel economy, as measured by an actual road test, is noticeably lower than expected. Also, economy is noticeably lower than it was on this car at one time, as previously shown by an actual road test.

POSSIBLE CAUSE ACTION

Dirty air filter Clean or replace

Fuel injection system Check air/fuel ratio

Incorrect fuel pressure Correct as needed

Speedometer inaccurate Check speedometer calibration

Fuel leak Inspect fuel lines, tank
and fittings