Based on U.S. EPA rules for E15 (approved for model year 2001+ light-duty vehicles and flex-fuel vehicles) and U.S. Department of Energy guidance. Always follow your owner's manual.
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U.S. guides
E10 in lawnmowers, chainsaws, outboards and other small engines
Can you use E10 in a lawnmower, strimmer, generator or boat engine? Practical advice on fuel choice and storage for small engines.
Read →E15 gasoline: which cars can use it? (USA)
What E15 is, which U.S. vehicles are approved for it (2001 and newer cars and light trucks), which engines must never use it and how to spot it at the pump.
Read →E10 vs E15 vs E85: U.S. ethanol fuels explained
Compare the three ethanol blends sold in the U.S.: ethanol content, which vehicles can use each, octane and how to read the pump labels.
Read →Car-by-car E15 approvals from automakers are coming to this section. Meanwhile, for European makes and E10, see the UK E10 checker.