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How to Get Better Mileage on a H2 Hummer

by Rachael Hope

Properly maintaining your H2 Hummer will provide an improved vehicle performance, including better fuel economy and engine performance. Because of the H2's massive weight, 64,000 pounds, the gas mileage is a big downfall. The H2 averages just 10 miles per gallon. Because of this, paying attention to your vehicle's needs is essential, as you can receive improved gas mileage by up to 40 percent and prolong the life of your Hummer.

Follow the speed limit and always allow ample space between your H2 Hummer and the vehicle in front of you to prevent sudden and fast stops. According to the U.S. Department of Energy, gas mileage decreases substantially when traveling above 60 miles per hour. Also, rapid braking will cause your gas mileage to decrease by up to 33 percent.

Accelerate at a slow and steady pace. Rapid acceleration depletes gas much faster and will cause a drop in gas mileage by up to 33 percent on the highway, and approximately 5 percent driving in town.

Change your oil regularly, and use the grade recommended for your H2 Hummer. The only recommended viscosity oil grade is SAE SW-30, according to General Motors. Using a grade not recommended for your vehicle can cause reduced engine performance, thus reducing your gas mileage.

Check the tire pressure in all four tires often. The proper tire pressure makes your vehicle safer, as well as improving your gas mileage. The proper tire pressure can improve your gas mileage by over 3 percent, according to the U.S. Department of Energy.

Take your H2 in for a tune-up regularly. An unmaintained vehicle can reduce your gas mileage by up to 4 percent. Bigger maintenance and engine problems can reduce your mileage by up to 40 percent.

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