Avoid excessive idling—follow the 10 second rule. Ten seconds of idling can use more fuel and create more emissions than turning off the engine and restarting it. If you are stopped for more than 10 seconds - except in traffic - turn off your engine. Learn more about idling.
Care for your car. Regular maintenance and tune-ups, changing the oil and checking tire inflation can improve gas mileage, extend your car's life and increase its resale value. It also reduces traffic congestion due to preventable breakdowns and it could reduce your car's emissions by more than half.