What is the best speed to drive to save gas?
What is the best speed to drive to save gas? Slow Down and Drive Conservatively For light-duty vehicles, for example, every 5 mph you drive over 50 mph is like paying $0.30 more per gallon of gas (based on the price of gas at $4.32 per gallon). Reducing your speed by 5 to 10 mph can improve fuel economy by 7%–14%.
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