From Article “How to Maximize Fuel Economy”
The way you drive directly affects your fuel economy. Speeding and rapidly accelerating from a stop increases gas consumption, whereas planning an efficient drive and maintaining a consistent speed within the posted limit can help you go farther on a tankful. Follow these 10 tips to get better gas mileage. You just may make fewer gas station stops and save money too.
Map a route before you go to minimize unnecessary turnarounds and backtracking. Avoid peak traffic times. Combine errands and go to "one stop shops” where you can do multiple tasks (banking, shopping, etc.).
Fuel economy peaks at around 50 mph on most cars, then drops off as speeds increase. Reducing highway speeds by 5 to 10 mph can increase fuel economy 7 to 14 percent.
Avoid "jack rabbit" starts, rapid acceleration and hard braking, which can lower fuel economy by 15 to 30 percent at highway speeds and 10 to 40 percent in stop-and-go traffic.
A car engine consumes one quarter to one half gallon of fuel per hour when idling, but a warm engine only takes around 10 seconds worth of fuel to restart. Where safe to do so, shut off your engine if you will be stopped for more than a minute.
Having a pre-paid pass on toll roads allows you to use the express lane, saving fuel by minimizing or eliminating tollbooth slowdowns and stops.
Take advantage of flex work hours to avoid commuting during peak traffic times.
Watch the traffic ahead and "time" stoplights to maintain momentum and avoid unnecessary stop and go.
Driving at a consistent speed on the highway saves gas. However, never use cruise control on slippery roads as it could cause a loss of vehicle control.
If your car has a manual transmission, upshift as soon as practical. When coming to a stop, use the brakes. Do not downshift to slow the car.
In cold temperatures, start the engine and then drive the car normally to warm the engine. Driving brings the engine to operating temperature more rapidly and thus, saves gas.