Last week’s event, in which 27 cars and vans took part, offered prizes in six categories – and Guild members scooped four. These comprised best MPG for both cars and vans, best improvement over official figures and the safety prize for smooth driving. Competitors covered 380 miles in two days from the event’s Cirencester base, with the route taking them into the Brecon Beacons, Hereford, Worcester and Stratford-Upon-Avon. All types of road, from twisting B-roads to the M4 and M5 motorway, were included.

Guild member Andrew Marriott scored the best overall MPG score, achieving 108.7mpg from a Ford Fiesta Econetic. This finally breaks the 100mpg barrier MPG Marathon organisers have been targeting for years and represents a 27% improvement on the car’s official figure.

Guild Committee member John Kendall and Dr Paul Nieuwenhuis scooped the Best MPG prize in the CV category, averaging 77.51mpg in a Citroen Nemo van. That’s a 23% improvement over the official figures.

Neil McIntee also raised eyebrows by returning fuel consumption a staggering 59% better than the official figures in a Vauxhall Vivaro, easily claiming the Best Percentage Improvement prize.

Diesel Car editor Ian Robertson won the Tracker Safety Award in a Peugeot 208 e-HDi, averaging more than 90mpg along the way.

Other Guild members taking part in the annual event – organised by the GoMW’s Ross Durkin – included Sue Baker, Peter Cracknell, Dan Gilkes, Alex Grant, John Kerswill, Robert Marshall, Dave Moss and Iain Robertson.

Guild chairman Richard Aucock also competed, registering an 84.91mpg average in a BMW 320d EfficientDynamics. He praised the performance of Guild members. 'Green driving takes real skill and it’s pleasing to see so many members demonstrating their talents in this annual fuel economy challenge. Scooping four of the six prizes on offer is testament to the experience we have in the Guild ranks.

'Every Guild member taking part also beat their vehicle’s official fuel consumption figure, proving that the claimed figures are attainable out on the road with the right sort of driving.'