Energy bureau to give star ratings to cars as per fuel efficiency, five stars for over 25.6 km per litre New Delhi, July 18: Your new set of wheels is going to get its stars. In a first of its kind venture, the Bureau of Energy Efficiency (BEE) is embarking on a fuel efficiency labelling programme, in which cars will be assigned star-rating according to fuel efficiency. A voluntary start will be made this year. A similar programme of star-ratings is currently on for marking energy saving efficiency in electrical goods like refrigerators. Working under the Energy Conservation Act, 2001, the BEE, a statutory body under the Power Ministry, along with the Petroleum Conservation Research Association studied trends driving fuel economy programmes globally. Working with nine weight categories for four-wheel passenger vehicles, the stars will be awarded depending on fuel economy values, obtained by standardised tests conducted for emissions testing. While a five-star will mean fuel economy more than 25.6 kilometres per litre, a one-star will mean fuel economy above 10 kilometres per litre. The BEE estimates that three-fourth of the vehicle model variants will receive a three- or four-star rating. Its study also anticipates that the combination of fuel economy standards will provide a "necessary impetus' for development of five-star rated vehicles. The BEE also estimates that fuel economy compliant with labelling programme will result in as much as 20 per cent reduction in oil use in 2030