New Mercedes CLA is a game changer for electric cars - 492-mile range and five miles per kilowatt hour efficiency mark out sleek new saloon as a Tesla beater

Mercedes has just unveiled a major upgrade to its popular CLA range, which not only adds some new styling but also makes this car a whole lot smarter.

The launch models will get up to 349bhp and 492 miles of range, and will be joined by a series of hybrids later this year