MORE range is being added to Vauxhall's current electric cars thanks to upgrades to its heater, transmission and the fitting of new tyres.

The changes increase the range of the Corsa-e by six per cent giving it a claimed 222 miles of zero emission motoring while the Mokka-e SUV sees its range rise by some four per cent to 209 miles.

The range increases have been achieved through the optimisation of the heating, ventilation, air conditioning and propulsion systems of the two models and the introduction of low rolling resistance tyres.

Vauxhall says it will offer an electrified variant across its entire model line-up by 2024 and will have a fully electric vehicle range by 2028 - years ahead of the UK Government deadline.

The company already offers five fully-electric cars and vans and, following the launch of the new Astra, two plug-in hybrid models.

A new Combo-e electric van is due for introduction later in December and will complete Vauxhall's fully-electrified LCV line-up.