New site will tell you the most efficient car to buy. But not the fastest
31 July 2007

The Department for Transport is launching a website that promises to help you find the most eco-friendly vehicle.

Developed in conjunction with our sister magazine What Car?, the site uses alphabetical colour-coded ratings like those on domestic appliances. 'A' is the most efficient and 'G' the least.

Go to, input your preferred transmission and fuel types, and the site will tell you which car is most efficient.

Naturally here at Autocar we'd like to have the option of inputting a few more details, such as top speed and acceleration – but even we could be won over by the new website's 'savings calculator'. This works out how much cash you could be saving by picking a more efficient model.

"By choosing the car with the most fuel efficient engine in its class, drivers could reduce their engine CO2 emissions by 24 per cent and potentially save a quarter on fuel costs,’ said spokesman Jim Fitzpatrick.

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