The NAFA Fleet Management Association said last week it was concerned that the use of E15 may cause “significant damage” to fleet vehicles and lead to substantial costs throughout the industry.

Over the past year, the Environmental Protection Agency (EPA) issued two partial waivers under the Clean Air Act that in sum allow E15 to be sold for use in model year 2001 and newer cars and light trucks.

The EPA based its waiver decisions on testing and analysis showing that these vehicles could continue to meet emission standards if operated on E15. In a letter sent to Lisa Jackson, EPA Administrator, NAFA urged the agency to reconsider the waiver.

“The waiver for E15 jeopardizes the billions of dollars that fleets have invested in vehicles and engines used to carry out the mission of private and public sector fleets throughout the country,” wrote NAFA’s Executive Director Phil Russo