The Chevrolet Spark EV, a plug-in version of the company’s Spark city car, has been officially unveiled at the Los Angeles motor show.

The Spark is sold in North America, South Korea, India and Australia. GM will build the electric drivetrain in the US and retrofit it to the Korean-built Spark.

That drivetrain consists of 128bhp motor that develops 400lb ft, and a 20KwH battery mounted under the rear seats, which Chevrolet claims will give it the best acceleration - with the manufacturer claiming 0-60mph in under eight seconds - and among the best range in its class. The car will be available with a fast-charge option, which enables the battery to be 80 per cent charged in 20 minutes.

On a 240v system the Spark fully charges in seven hours, although in the US this will require a dedicated charging point. And although Chevrolet is not confirming the Spark’s range, it’s likely to be around 60 miles.

The car’s aerodynamics have been tweaked with a new grille, redesigned sill covers and an active shutter system that closes and opens the lower air intakes to control air flow through the car. The modifications are said to add 2.5 miles to the car’s range.

The Spark EV goes on sale in the US next summer, and will be priced at $25,000 (£15,550), after tax reductions and incentives from individual states. However, it’s not going on sale throughout North America – currently only California, Oregon and Canada will get the car, along with South Korea.

Also being launched is an advanced version of Chevrolet’s MyLink infotainment system, with improved smartphone integration. It will first make an appearance on the US-only 2014 Impala saloon.

Joining the Spark EV on the Chevrolet stand is the Impala, and a Hot Wheels Camaro featuring a customised interior and paint finish.