Nine cars competed in four motor classes on Saturday at the annual Supermileage Challenge hosted by the UW-Stout Technology and Engineering Education Collegiate Association at the Dunn County Fairgrounds.
Building a vehicle with a 296.1 mile per gallon average was the Medford #72 team which won the Briggs Stock Class. Medford’s #42 Unlimited Class car marked 281.5 mpg. The Cadott #5 Open Stock Class car won its division with a 271.9 mpg average. Winning the Modified Class was the Medford #90 team with 239.6 mpg.
This year’s cars — all built by high school students — did fall a little short of last year’s top car from Medford which could have gone 466 miles on gallon of gas.
A variety of techniques used to improve gas mileage include: aerodynamic and lightweight vehicle design, motor and exhaust modifications, special propulsion designs, limited driver weight and conservative driving, according to UW-Stout student Jon Hiebl, TEECA campus president and event organizer.
Cars have a maximum speed limit of 25 miles per hour. Radar guns are used to enforce the rule, in which violators are penalized 50 mpg for every 1 mph over the speed limit.
The Supermileage Challenge, dating back to 1992, is the oldest of a series of events held throughout the state by the Wisconsin Energy Efficient Vehicle Association.