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Gasoline Conservation Tips

You can save money while reducing both fuel consumption and air pollution by following some of the tips listed here. Which steps you choose to take will depend on your own particular circumstances, but any of them will reduce the amount of money you spend for gasoline.

Driving | Fuel and Maintenance | Links | Purchasing a Vehicle | Trips, Errands, Commuting, Vacations


  • Avoid rapid acceleration; most horsepower (consumes a lot of gas) is built into cars for acceleration; relatively little power (and thus fuel) is required to maintain speed.
  • Avoid hard braking and sudden stops. Stay alert and anticipate traffic lights, stop signs and merges. Use turn signals. Traffic will move more smoothly, which saves fuel for everyone.
  • When starting out, shift up to the next gear (manual transmission) as soon as possible without straining the engine.
  • Drive more slowly. One study reported that for all vehicles tested there was at least 20% loss in fuel economy as cruising speed was increased from 55 to 75 mph. So, 20 mpg at 55 mph becomes 16 mpg or less at 75 mph.
  • If your car has an instantaneous mpg indicator, use it to improve your driving efficiency.
  • Remove extra weight from the car; 100 extra pounds may cost 1 mpg. Pack lightly for trips.
  • Try to avoid using roof racks and remove when they are not in use.
  • Use cruise control on highway trips.
  • For any stop you expect to last more than a minute, shut of your engine rather than letting it idle.
  • Do not warm engine up before driving; it is not necessary, even in cold weather.
  • Do not rev engine before shutting it off; this wastes fuel and can dilute motor oil, leading to excessive wear on engine parts.
  • Reduce the use of your air conditioner at low driving speeds. When driving over 40 mph using the air conditioner costs less fuel than having windows open.
  • Park in the shade and/or leave windows slightly open to reduce the need for air conditioning.

back to topFuel and Maintenance

  • Replace air and fuel filters regularly as instructed by your vehicle's maintenance manual; change air filter more often if driving in dusty conditions.
  • Keep engine properly tuned.
  • Use API certified "Energy Conserving" motor oil, either conventional or synthetic. Use the service classification and viscosity specified for your vehicle. Example: SJ and 5W-30. Follow use/change interval in vehicle owner's manual.
  • Do not buy "aggressive" tread tires if you do not need them.
  • Keep tires properly inflated and wheels aligned.
  • Do not use mid-grade or premium grade gasoline unless specified for your vehicle. Older vehicles may require these grades to avoid "knock" which reduces power and may damage the engine.
  • Do not overfill the tank.
  • Determine gasoline mileage periodically. Declining mileage can be an early indicator of mechanical problems or a need for servicing.
  • Store emergency fuel supply or fuel for gasoline-fueled power equipment in sealed, airtight containers, and it will still be usable in another season.

back to topLinks

back to topPurchasing a Vehicle

When purchasing, consider buying:

  • the most fuel-efficient vehicle that will meet most of your needs, and rent a larger vehicle or a different kind for infrequent needs;
  • a "hybrid" vehicle that combines a high-efficiency gasoline engine with an electric motor for greater fuel efficiency;
  • fewer power options such as automatic transmission and especially air conditioner;
  • 2-wheel drive if you really don't need 4-wheel or all-wheel drive.

Visit the Granite State Clean Cars website provided by the Department of Environmental Services for tips on how to identify less polluting, more fuel efficient, new vehicles sold at dealerships in New Hampshire.

back to topTrips, Errands, Commuting, Vacations

  • Carpool if possible for traveling to work or for errands. See the NH Department of Transportation's Rideshare Program for more information.
  • Combine errands to reduce the number of trips.
  • Utilize mass transit. Support efforts to make mass transit more available.
  • For shorter errands, consider walking or bicycling.
  • Try to take one less car trip per week.
  • Try to work or study at home at least part of the time.
  • Consider living closer to where you work, or working closer to home.
  • Consider shorter vacation and recreation trips; learn what's special in nearby nature, culture and history.

NH Office of Strategic Initiatives
Governor Hugh J. Gallen State Office Park
Johnson Hall, 3rd Floor  |  107 Pleasant Street  |  Concord, NH 03301
(603) 271-2155  |  fax: (603) 271-2615