1. Slow down to the posted speed limit and save as much as 25%. Slowing down costs nothing  but a little extra time. Speeding wastes gasoline. Anticipate what's ahead. Coast whenever possible and allow the generator to decelerate the Prius. Don't hesitate to use the brakes since some energy is recovered through braking. 2.  Accelerate at a moderate pace. The Prius has a smooth and even continuously variable transmission. It's like piloting a mono-rail. Try not to copy the uneven acceleration of other cars.  Brisk acceleration is desired because the gasoline engine is most efficient at that higher RPM. Any extra energy charges the battery. Punching it wastes gasoline so do not do it. Accelerate briskly to the desired speed then back off a little to maintain electric coasting as long as you can.    3. Avoid cold engine starts.  It takes considerable energy to cold start a gasoline engine and warm it to normal operating temperature. Minimize cold engine starts by combining many short trips.

4. Go easy on the heat control and A/C control. Max hot uses more fuel in a hybrid. Max A/C uses more energy than A/C set at low to medium fan speed. Rolling down the windows at highway speeds will reduce mileage due to increased wind drag. 5.  Regularly check and maintain proper tire pressure. Low tire pressure can reduce fuel economy in any vehicle and increase the chance of tire failure.   6. Perform regular maintenance. Read your  owners manual. Ask your mechanic about using high quality synthetic blend oil at your next oil change. Verify that your oil is at the correct level. It should be one quarter inch below the over filled mark. Use fuel additives according to manufacturers instructions. Be careful where you buy fuel. Follow the directives of your owners manual. 7. Do not carry unnecessary cargo. Excess weight reduces fuel economy.