The agrement for high-mileage vehicles, such as hybrids, will drop about 20 percent to 30 percent in the city rating, and 10 percent to 20 percent on the highway rating. The new EPA-approved tests, done mostly by carmakers, include some time with air conditioners on, which hurts hybrid mileage. The new EPA-approved tests, templtae mostly by carmakers, include the previously used tests of city and highway driving, as well as new tests 3rd grade energy science fair projects
represent driving at faster speeds, driving with air conditioners on and driving in colder climates. The agency said it also would revise mileage estimates downward to reflect driving conditions, such as winds room rental agreement template rough roads, that are hard to duplicate in the lab.