That’s right, a modified Caterham Seven achieved 131mpg at the Shell Eco-Marathon in Rockingham — “an annual competition to determine the car with the greatest fuel economy after 40 minutes driving and seven laps of the track at a minimum of 15mph.”
Customized by carbon fiber specialist Axon Automotive, with the support of Energy-Efficient Motorsport (EEMS), the standard Caterham Seven Roadsport 1.6-litre K Series used enhanced aerodynamics, new lightweight seating, narrow low rolling resistance tyres and economic driving techniques to ensure it maximised every drop of fuel
[via AutomotoPortal]