The five-door, four-seater saloon car, sold as the Chevrolet Volt in the US, is an electric vehicle with an on-board petrol generator that would set you back £37,250 for the most basic model.
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The votes, announced at the Geneva Motor Show, were cast by 59 journalists from 23 countries.
"For users who cover moderate daily distances, the autonomy as an electric vehicle is adequate, recharge rather fast and the energy cost very low," said the Car of the Year organisation. "Other kind of motorists would have to eventually rely in electric energy generated on board.
"The Ampera/Volt, with a petrol engine operating as a generator when needed, faces the so called ‘range anxiety’ of battery-driven car users with the concept of an 'Extended range EV'. GM has addressed the concerns on heat control of the lithium-ion battery pack with new solutions."