Poor Fuel Mileage: Axiom
- Brake drag.
- Clutch slipping.
- Engine idle speed to high.
- Excessive Exhaust Gas Recirculation flow due to trouble in Exhaust Gas Recirculation system.
- Fuel cut function does not work.
- Fuel system leakage.
- Misfiring or abnormal combustion due to trouble in ignition system.
- Mixture too rich or too lean due to trouble in fuel injection system.
- Selection of transmission gear incorrect.