Britain's 'greenest' car is the Honda Insight with the 'least green' car being the 8.0 litre Dodge SRT-10, according to the Environmental Transport Association (ETA). It calculates that a year's driving in the Dodge emits the same amount of carbon dioxide emissions as is absorbed by 322 mature trees - the equivalent of an acre of oak forest. The ETA examined over 1,300 models of car currently on sale in Britain and compared their power, emissions, fuel efficiency and the amount of noise they produce to create a definitive guide to buying the 'greenest' vehicle.
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