11 December 2006
The public is aghast
The last time the Environmental Protection Agency tinkered with their gas-mileage ratings, back in the 1980s, they didn't do anything about the methodology; instead, they applied a fudge factor "to account for factors not included in the tests".
Currently, EPA relies on data from two laboratory tests to determine the city and highway fuel economy estimates. With new labels, fuel economy estimates will reflect vehicle-specific data from tests designed to replicate three real-world conditions that can significantly affect fuel economy: high speed/rapid acceleration driving, use of air conditioning, and cold temperature operation.
Of course, no two people drive exactly the same way, so you still may not reach the numbers on the label.
The following minor bits of historical data may be of interest:
Of course, I drive when it's cold, with the A/C on, and with the pedal in close proximity to the metal.Posted at 5:11 PM to Driver's Seat , Family Joules