With gas prices reaching record levels this summer, many automakers emphasized increased fuel-economy on new models. But there’s “not a snowball’s chance that any of these vehicles will match their EPA-certified mpg when you drive them on a U.S. highway,” says Csaba Csere of Car and Driver. Csere calls for more accurate mpg testing to give consumers a better idea of what they’ll really be paying for fuel. According to data collected by the magazine, most vehicles barely match their EPA city fuel-economy numbers while being driven on the highway. What’s wrong with EPA testing? First of all, the highway test crawls along at an average speed of 48.3 mph and never exceeds 60. What’s more, the peak acceleration on this test is 3.3 mph per second. This is equivalent to a 0-to-60 time of more than 18 seconds.
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