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Hi All,
From Aerohead, it sounds like the EPA does include aerodynamic effects. I still think they do not include the impact of hills however. For Hybrid cars this has a negative impact on the numbers they give. A Hybrid goes up the hill on engine and electric, and down the hill it charges the battery back. So, it uses 1/2 the gas going up a non-hybrid car would and almost no gas to recharge the battery. I doubt highly that the EPA sets the dyno to drive the wheels of the vehicle they are testing. Until they do, they will not be getting hybrid car fuel economy right.
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