■ The gas cap was left open and fuel is evaporating
■ The tires are underinflated
■ The vehicle is carrying more weight than normal
■ The fuel injectors are defective
■ There are too many unnecessary accelerations
■ The fuel pump is damaged
■ The fuel filter is dirty
■ One or more spark plug wires are defective
■ One of the fuel pump hoses has come loose (this causes a strong gasoline smell inside the car)
■ The spark plugs are in poor condition