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Originally Posted by th_tan
very ood tips, thanks  . But I am concerned on this statistic you mentioned.
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9. Drive at the speed limit. Cars use about 20% more fuel driving at 70 miles per hour than they do at 55 miles per hour.
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can you show me where you found that at? thats a huge percent, sounds inaccurate, but prove me wrong please.
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That depends on the car! A car with a small frontal cross-section and extreme aerodynamics (think Corvette) has very little wind resistance and increasing speed reduces milege by only a small percentage. But take something like a Navigator and the 20% is probably not far off.
Did you know that a Corvette, even with its powerful V8, gets almost 30 MPG on the highway! Aerodynamics and tall highway gear make it effificent at those speeds!