BMW AG will build its first hybrid supercar as part of a broader effort to create more fuel-efficient vehicles. The Vision Efficient Dynamics model, which accelerates to 100 kilometers per hour (62 miles) in 4.8 seconds while emitting 99 grams of carbon dioxide per kilometer, will go on sale in 2013, the carmaker said at an event in Leipzig, Germany. The new sports car, which has doors that open upwards, is powered by a three-cylinder diesel engine and two electric motors. The car will be priced below the company’s Rolls-Royce models. Read more after the jump…

CEO Norbert Reithofer is developing the hybrid supercar and an electric-powered Megacity auto to help meet tighter environmental regulations and to boost sales to 2 million vehicles by 2020 from 1.4 million this year.

“It’s important for BMW to communicate even small progress to cement its perceived role as a leader in hybrid and environmental technology,” said Juergen Pieper, an analyst at Bankhaus Metzler in Frankfurt who recommends buying the shares. “It would help if they’re the first to sell such cars. But it’s going to take a while to make them count in terms of earnings.”

BMW’s hybrid sports car will have a similar acceleration rate to BMW’s M6 supercar, while emitting just 30 percent of the M6 coupe’s CO2 per kilometer, according to BMW’s Web site. The carmaker targets “significant” sales volumes for the Vision Efficient Dynamics and will make it available on all major markets as BMW aims to steal customers from competitors’ models, Draeger said.

“I expect a very considerable share of conquests,” he said. “We want to achieve a certain market presence with the car and so can’t limit production to one car a day.”