Vehicle gas caps – About 17 percent of the vehicles on the roads have gas caps that are either damaged, loose or are missing altogether, causing 147 million gallons of gas to vaporize every year.
Under inflated tires – When tires aren’t inflated properly it’s like driving with the parking brake on and can cost a mile or two per gallon.
Worn spark plugs – A vehicle can have either four, six or eight spark plugs, which fire as many as 3 million times every 1,000 miles, resulting in a lot of heat and electrical and chemical erosion. A dirty spark plug causes misfiring, which wastes fuel. Spark plugs need to be replaced regularly.
Dirty air filters – An air filter that is clogged with dirt, dust and bugs chokes off the air and creates a “rich” mixture – too much gas being burned for the amount of air, which wastes gas and causes the engine to lose power. Replacing a clogged air filter can improve gas mileage by as much as 10 percent, saving about 15 cents a gallon.
Fuel Saving Tips
Don’t be an aggressive driver – Aggressive driving can lower gas mileage by as much as 33 percent on the highway and 5 percent on city streets, which results in 7 to 49 cents per gallon.
Avoid excessive idling – Sitting idle gets zero miles per gallon. Letting the vehicle warm up for one to two minutes is sufficient.
Observe the speed limit – Gas mileage decreases rapidly at speeds above 60 mph. Each mph driven over 60 will result in an additional 10 cents per gallon. To maintain a constant speed on the highway, cruise control is recommended.
Some of the above statistics were gathered from a U.S. Department of Energy Web site: www.fueleconomy.gov
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