Friday, April 30, 2010

Speed vs. Fuel Efficiency


Most cars demonstrate their best fuel economy between 25 mph through 55 mph, and most have better fuel economy at 65 mph rather than 45 mph. At 65 mph, the wind resistance becomes great enough so the fuel efficiency goes down in a car. Slowing from 70 mph to 55 mph may give 25% more mpg.

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