A common reason for an engine not to start is a. water in the gas. When the temperature drops, so does tire pressure, affecting a. gas mileage. Have the thermostat checked. Corroded battery connections can cause symptoms similar to a dead battery. For every ten degrees of temperature drop your tires lose about a pound of pressure.
Underinflated tires wear unevenly, increase rolling resistance.
This wastes fuel and can affect the vehicle's handling characteristics. Provided as a public service by Car Care Council.