The Nissan Leaf was recently rated by the Environment Protection Agency in the US who then slapped an economy rating sticker on the car - the first official rating of such a car. Now it's main rival, the Chevrolet Volt, has just been rated and it's almost as green.
Chevrolet's most eco-friendly car isn't an electric vehicle like the Nissan Leaf though. Even so, the Volt's plug-in, extended-range hybrid system has been rated as only slightly less 'green' than its rival. The EPA says the car is able to achieve 93mpg, or 2.5L/100km - just 0.3L/100km more than the Leaf.
The EPA also says the car has a range of 35 miles (56km) when driven in full electric mode with the battery fully charged, and 379 miles (610km) when using the range-extending petrol engine. Annual costs for the Chevrolet Volt were rated higher than the Nissan Leaf, naturally, requiring $1302 per year to run compared to the Nissan Leaf's $561 rating.
Chevrolet Volt Global Vehicle Line Executive, Doug Parks, was happy about the rating but says it was quite complex to come up with the figures, he says,
"We are quite pleased with the numbers and the label. If there was a simpler way, we would have done it.”
Parks also says these ratings are variable depending on how you drive it.