Poor Fuel Economy [SKYACTIV-G]: Notes

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POOR FUEL ECONOMY (SKYACTIV-G) DESCRIPTION AND POSSIBLE CAUSE

Troubleshooting item	Poor fuel economy
Description	The fuel consumption is high compared to the customer's expectations or the previous fuel consumption.
Possible cause	NOTE: The perceived poor fuel economy condition has two causes; the vehicle conditions and how the driver uses the vehicle. Especially, it relies heavily on how the driver uses the vehicle. Engine oil malfunction Improper engine oil level Engine oil contamination Improper engine oil viscosity Improper engine compression Ignition system malfunction Improper engine coolant level Improper tire air pressure Improper tires, wheels (large size, irregular size) Clutch slippage (MTX) Improper ATF level (ATX) Brake dragging Engine operation time is longer than traveled distance Vehicle is driven in congested traffic frequently Vehicle left idling for long periods Amount of fuel injection increases Vehicle is carrying excess items (luggage) Frequent acceleration/deceleration Frequently driving uphill Travel distances are short (engine does not warm up)
System wiring diagram	Not applicable
Connector diagram	Not applicable