IMSA Approves E20 Fuel for GTLM; Corvette Confirms Switch

GT Le Mans teams in the IMSA WeatherTech SportsCar Championship will have one additional fuel choice next year, with E20 having been approved for competition, a blend that’s expected to be used by the majority of competitors.

E20 (20 percent ethanol, 80 percent gasoline) joins the previously permitted E10 and cellulosic E85 fuels as approved for the GTLM class, a move that was made, according to IMSA President and COO Scott Atherton, to provide a fuel option similar to one used at Le Mans.

"We were approached by some manufacturers that expressed a desire to have E20 added as another fuel option," Atherton told Sportscar365. "It doesn’t replace anything; it’s an incremental offer.

"The motivation was to match up the same fuel characteristics in this championship as they use at Le Mans and in some cases the WEC."