- Avoid High Speeds
As your speed increases, your aerodynamic drag increases in an exponential fashion. Driving 65 mph (100 km/h) vs 75 mph (120 km/h) will reduce fuel consumption by about 15%.
- Do Not Accelerate or Brake
By anticipating the traffic and applying slow steady acceleration and braking, fuel economy may increase by as much as 20%.
- Keep Tires Properly Inflated
Keep tire air pressure at the level recommended by your vehicle manufacturer. A single tire under inflated by 2 PSI, increases fuel consumption by 1%.
- Use A/C Sparingly
When the air conditioner is on it puts extra load on the engine forcing more fuel to be used (by about 20%). The defrost position on Subaru vehicles also uses the air conditioner.
- Keep Windows
Windows open, especially at highway speeds, increase drag and result in decreased fuel economy of up to 10%.
- Service Vehicle Regularly
Proper maintenance avoids poor fuel economy related to dirty air filters, old spark plugs or low fluid levels.
- Use Cruise
Maintaining a constant speed over long distances often saves gas.
- Avoid Heavy
Remove items from your vehicle that do not need to be there. Remove the sand bags from your trunk in the spring. Try to pack lightly for long trips.
- Avoid Long Idles
At idle, your vehicle gets 0 miles per gallon. If you anticipate being stopped for more than 1 minute, shut off the car. Restarting the car uses less fuel than letting it idle for this time. If you warm up your vehicle in the winter, try to do so for a minimal amount of time.
- Purchase a Fuel Efficient Vehicle
When buying a new vehicle examine the vehicle's rated fuel efficiency. Usually choosing a small vehicle with a manual transmission will provide you with great fuel economy.