Toyota has revealed a facelifted version of its Prius hybrid.

The chief innovation with the refreshed model is the availability of Hybrid AWD-I – a new four-wheel drive system that uses an additional electric motor to provide extra drive through the rear axle when required, in addition to the existing hybrid powertrain driving the front wheels.

The new rear motor will engage automatically when pulling away, at speeds up to 7mph, and when sensors detect low-grip conditions, such is in snow or on wet and slippery road surfaces, at speeds between 7 and 44mph. 

The four-wheel drive Prius gets a new nickel-metal battery, while the front-wheel drive Prius gets a new lithium-ion battery.

The facelifted Prius also gets styling tweaks, including slim new headlights, a raised front bumper, revised rear lights and a new-look tailgate. 

New paint colours and wheel designs are also available.

Interior improvements include a larger wireless charging tray, added a head-up display and an improved multimedia system.

Having made its debut at the Los Angeles Motor Show, the revised Prius will make its European debut at the Brussels Motor Show in January. 

UK prices, specifications and an on-sale date are yet to be confirmed.