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DOE is on track to complete testing designed to determine the impact of higher ethanol blends on vehicles built after 2007 by the end of September. DOE is also testing some vehicles built before 2007 and is also testing tanks and other fuel handling equipment to see how they might be affected by E15.

While results from the tests conducted to-date look good, EPA will not make a final decision until DOE completes its current comprehensive testing of the newer vehicles. EPA is taking steps to ensure the appropriate pieces are in place should the results of the complete set of tests be positive. Based on DOE's schedule, EPA believes it will be able to make a final determination on whether to approve the use of higher ethanol blends this fall.