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AddReport: EPA kills Chevy Volt's 230 mpg rating

2011 Chevrolet Volt in 'Victory Red' – Click above for high-res image gallery

AddAuto X Prize throws water on GM's 230 mpg claim, offers mpge calculator

With all of the attention being paid to the 230 mpg number that the Chevy Volt will apparently be granted by the EPA, the Automotive X Prize thought it was time to weigh in on the subject of calculating fuel efficiency for vehicles that use energy sources other than gasoline. They don't like it. Instead, the AXP prefers MPGe, a "rigorous and more neutral measure" of fuel efficiency. The AXP's John Shore walked us through how the long-running competition thinks about MPGe. They've been at it for

38Bill Ford, AdAge chide GM over 230 MPG Chevrolet Volt MPG projection

The Chevrolet Volt's 230 mpg number continues to be questioned. The latest to criticize is Bill Ford, who takes issue not only with the General Motors-approved 230 figure, but also Nissan's claim that its Leaf EV will get 367 mpg. The real culprit here, Ford said, is the EPA's methodology, which he argues is meaningless. "This question devolves into madness," Ford reportedly told Green Car Advisor:

AddChevy Volt's 230 mpg rating, ad campaign comes under fire from Bill Ford, AdAge

The Chevrolet Volt's 230 mpg number continues to be questioned. The latest to criticize is Bill Ford, who takes issue not only with the General Motors-approved 230 figure, but also Nissan's claim that its Leaf EV will get 367 mpg. The real culprit here, Ford said, is the EPA's methodology, which he argues is meaningless. "This question devolves into madness," Ford reportedly told Green Car Advisor:

80How did GM arrive at 230 mpg for the 2011 Chevrolet Volt?

Neither General Motors nor the EPA are making declarative statements about how, exactly, the 2011 Chevy Volt will achieve it's much-touted 230 mpg rating that was announced today. GM's most clear statement (available in full after the break) says that some consumers "may be able to be in pure electric mode on a daily basis without having to use any gas" and that "key to high-mileage performance is for a Volt driver to plug into the electric grid at least once each day."

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