February 27, 2007

Fuel economy drops under new EPA mileage calculations

Washington, D.C. – The U.S. Environmental Protection Agency (EPA) has published estimates of the effects that its revised methods for estimating vehicle fuel economy will have on earlier model year cars. The new estimates apply to model-year 2008 vehicles.

The city mile-per-gallon estimates for most vehicles will drop by an average of about 12 per cent, and by as much as 30 per cent for some vehicles, while highway mpg drops an average of 8 per cent and as much as 25 per cent. While fuel economy estimates for hybrids also drop, they retain most of their fuel economy advantage over conventional vehicles.

The new EPA methods include the city and highway tests previously used, along with additional tests to represent faster speeds and acceleration, air conditioner use, and colder outside temperatures. A comparison tool for fuel economy can be found at FuelEconomy.gov.

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