10 Tips for Better Gas Mileage


With today's high gas prices, it's worth using these 10 simple steps to improve your gas mileage. If you're a gas-saving pro who is already aware of these tips, also check out the pointers from ALLDATA's ASE-certified technicians.

1 Don't use premium fuel if your car does not require it (check your owner's manual); using it is an unnecessary expense.
2 Keep your tires properly inflated, and check them frequently. (Note 1)
3 Don't idle your engine for long periods. Turn off your engine when you leave the car or have to wait a long time. (Note 2)
4 Keep your speed at 55 miles per hour or less whenever possible. (Note 3)
5 Empty the trunk! Extra clothes, overdue library books, tools and the bag of aluminum cans that you have been meaning to take to the recycler all weigh down your car unnecessarily. (Note 4)
6 Drive in the highest gear possible (without lugging the engine).
7 Anticipate merging traffic and stoplights - decelerate and accelerate smoothly.
8 Plan your trips wisely. If you need to go several places, plan a route that allows you to run most or all of your errands in one outing.
9 Keep your engine in tune and make sure the air and fuel filters are clean.
10 Avoid excessive warm-up time. Modern engines don't require it.







1 According to the U.S. Department of Energy, nearly four million gallons of gasoline could be saved nationwide each day for every one pound per square inch (psi) of tire under-inflation, compared to the mileage if ALL vehicle tires were kept inflated to the manufacturer's recommended pressure.

2 The US Department of Energy estimates that for 145 million passenger vehicles idling five minutes per day, approximately four million gallons of gasoline are consumed without going anywhere.

3 According to the US Environmental Protection Agency and Oak Ridge National Laboratory, a vehicle loses about one percent in fuel economy for every one mile per hour above 55 m.p.h. that it is driven. A passenger car that averages 30 miles per gallon at 55 m.p.h. could typically get 28.5 m.p.g. at 60 m.p.h., 27 m.p.g. at 65 m.p.h. and 25.5 m.p.g. at 70 m.p.h. Remember, however, that for different speeds, the changes in fuel economy will vary by vehicle model.

4 Each 100 pounds of needless weight will cost up to one-half mile per gallon, on the average.