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Old 01-01-2013, 09:27 PM   #9
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The EPA is required to do the fuel economy estimates.
The manufacturers and dealers are required to display this information.

Why is the information WRONG across the board?
If you are going to mandate this info, you should have to provide valid info.

Here is some testing info, right from the EPA.
"The city and highway tests are currently performed under mild climate conditions (75 degrees F) and include acceleration rates and driving speeds that EPA believes are generally lower than those used by drivers in the real world. Neither test is run while using accessories, such as air conditioning. The highway test has a top speed of 60 miles per hour, and an average speed of only 48 miles per hour.
Since the mid-1990s, EPA’s emissions certification program has required the use of three additional tests which capture a much broader range of real-world driving conditions, including high-speed, fast-acceleration driving, the use of air conditioning, and colder temperature operation (20 degrees F). These conditions affect not only the amount of air pollutants a vehicle emits, but also a vehicle’s fuel economy. However, these tests were not required to measure fuel economy."

(referring to the new 2007 testing methods, below)
Compared to today’s estimates, the city mpg estimates for the manufacturers of most vehicles will drop by about 12 percent on average, and by as much as 30 percent for some vehicles. The highway mpg estimates will drop on average by about 8 percent, and by as much as 25 percent for some vehicles

Seems to me that the EPA knows it's estimates are wildly inaccurate, the manufacturers know it as well. But despite that, the government requires that this wildly inaccurate data be displayed, and manufacturers use it as a sales pitch. "not our fault we didn't do the estimates"

Rather than fix the testing methods, the EPA wastes resources trying to decide how to display the inaccurate information to you: MPG, gallons to go 100 miles, or annual expected fuel costs, or a star rating
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