We were told the Volt would achieve 230 MPG fuel economy and would always use the electric drivetrain to motivate the wheels — only using the onboard gasoline engine as a "range extender" for charging the batteries. It now turns out that not only were those fuel economy claims misleading, but the gasoline engine is actually used to motivate the wheels — making the Volt potentially nothing more than a very advanced hybrid car and pushing some automotive journalists like Scott Oldham at Edmunds.com to claim "GM lied to the world" about it.
http://jalopnik.com/5661051/how-gm-lied-about-the-electric-car
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No, GM Didn't 'Lie' About The Volt, The Press Got It Wrong
Nelson Ireson, The Car Connection
The "GM lied" fanatics can build their semantic sand castles and kick down GM's own all day long, but at the end of the day, this "lie" means the Volt is more capable than any other vehicle in its class. Is a flashy headline really worth dragging what may be the best EV/hybrid/futuremobile/whatever through the mud over a case of dubitable nomenclature? Apparently, to some, it is.
http://www.businessinsider.com/no-gm-didnt-lie-about-the-volt-the-press-got-it-wrong-2010-10