Do Hybrids Save Money? Depends How You Drive

Vehicle window stickers, fuel economy standards and even life cycle studies offer incomplete efficiency estimates for vehicles because they often fail to account for driving conditions, a Carnegie Mellon University analysis has found. Researchers concluded that driving patterns have a substantial effect on the economic and environmental benefits of electric vehicles.
CMU researchers Orkun Karabasoglua and Jeremy Michalek compared hybrid, extended-range plug-in hybrid and battery electric vehicles for their potential to reduce lifetime cost and life cycle greenhouse gas emissions under various scenarios and simulated driving conditions with findings including:
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