This provides shade for the house in the summer, a windbreak in the winter, and filters carbon from the air. Use a push-lawn mower to save energy and burn calories. A clogged air filter means wasted gas and higher emissions. Change the oil and oil filter in your car. This will reduce damage to your engine and reduce fuel consumption.
Warm engines use less fuel to start.
Keep tires properly inflated. Under-inflated tires waste gas and energy. Plan your trips to optimize vehicle use.