The U.K. magazine AutoExpress reports that the next-generation Toyota Prius will be switching from nickel-metal-hydride batteries to lithium-ion batteries that have greater capacity in an even smaller size. With use of the high-tech lithium-ion batteries, engineers are aiming for a fuel economy of 113 mpg.

The previous-model Prius can run on electric power only for a short time before the conventional engine automatically takes over. The more compact batteries will allow the new Prius to do without its petrol engine while making its way through slow-moving traffic. The lighter, more powerful batteries will ensure that the new Prius is quicker than the previous generation, with a 0-to-62-mph time of less than 10 seconds.

Toyota redesigned the third version of the Prius with a sportier look, retaining the high-backed stance of the previous model with arrow-shaped headlamps and a new front bumper with sporty air vents.The new model may even have a plug-in capability, by the time it hits showrooms in 2009.