The 2014 event marks the first time that electric vehicles have played a dominant role in the MPG Marathon, taking part alongside range extenders and plug-in hybrids in the famous eco-driving extravaganza, which is again being sponsored by ALD Automotive and organised by Fleet World magazine.

Entries include a Renault Zoe being driven by Fleet World’s own deputy editor Alex Grant, which has already had its first charging stop of the day, at Magor services. Meanwhile a team from leasing company ALD Automotive are an all-electric Nissan LEAF.

The pressure is now on the drivers to make the best possible use of the recharging network housed at service stations on the 360-mile route, with them being judged on how much power they consume over the course.

Electricity will be measured at 13p per kilowatt hour, while any carbon fuel that the petrol or diesel hybrid vehicles consume will also be taken into account.

The three new vehicle classes are joining the more familiar diesel and petrol engined cars and vans that traditionally take part in the event, which this year takes place in the picturesque Cotswolds and the rugged Brecon Beacons, finishing tomorrow.

All cars are again fitted with TRACKER tracking equipment so that organisers know exactly where each car has been and how far it has travelled. To follow live progress, visit http://www.tracker.co.uk/mpgmarathon, get the latest Tweets on #MPGMarathon and visit https://www.facebook.com/MPGMarathon

Results will be revealed on Monday 13th October.