How are vehicles tested for fuel economy?
The fuel economy estimates are determined by laboratory test procedures prescribed by EPA regulations. The test procedures are performed by auto manufacturers, and EPA audits the results at its own test laboratory to ensure manufacture accuracy. The vehicles are driven by professional drivers in controlled laboratory conditions. Using standardized test methods ensures that the fuel economy of all vehicles can be compared.EPA recently revised the methods it uses to determine the city and highway estimates posted on the Green Vehicle Guide and on the window stickers of all new cars and light trucks. The methods are expected to provide consumers with better fuel economy estimates, based on more realistic driving conditions, such as cold temperatures, higher speeds, and use of air conditioning. The new methods take effect with 2008 and later models. More information about the new EPA testing methods can be found at http://www.epa.gov/fueleconomy/.
The fuel economy estimates are determined by laboratory test procedures prescribed by EPA regulations. The test procedures are performed by auto manufacturers, and EPA audits the results at its own test laboratory to ensure manufacture accuracy. The vehicles are driven by professional drivers in controlled laboratory conditions. Using standardized test methods ensures that the fuel economy of all vehicles can be compared. EPA recently revised the methods it uses to determine the city and highway estimates posted on the Green Vehicle Guide and on the window stickers of all new cars and light trucks. The methods are expected to provide consumers with better fuel economy estimates, based on more realistic driving conditions, such as cold temperatures, higher speeds, and use of air conditioning. The new methods take effect with 2008 and later models. More information about the new EPA testing methods can be found at http://www.epa.gov/fueleconomy/.
