E15 Frequently Asked Questions
What is E15?
E15 is a blend of 15% ethanol and 85% gasoline. It contains 5% more ethanol than E10 which is the most common fuel used in the U.S. E15 is higher in octane – typically 88-90 octane compared to E10 which has an octane rating of 87.
Is E15 safe to use in my vehicle?
E15 is safe and approved for all 2001 & newer cars, trucks and SUV’s. These model years represent more than 80% of vehicles on the road today. It’s the most tested fuel in history and has no effect on vehicle drivability or emissions. More than 100 million trouble-free miles have been driven on E15 to date.
What type of mileage will I get when using E15?
There is no noticeable difference between the mileage achieved when using E15 and the mileage when operating on E10.
What is the price of E15?
E15 will be the lowest-cost fuel available for 2001 & newer vehicles, typically selling for 5 – 10 cents a gallon less than E10. The price difference between E15 and conventional gasoline without ethanol is around 40 cents.
Why can’t I use E15 during summer months?
While it is essentially the same gasoline, the combination of federal regulations and obstruction by petroleum companies prevents the sale of E15 as a registered fuel in the summer (June 1 to Sept. 15). When EPA approved E15 for use in all 2001 and newer passenger vehicles, it did not grant E15 the same vapor pressure waiver as E10. Taking advantage of this, petroleum companies only send Iowa gasoline suitable for E10 blending and not E15 blending. As a result, during the summer season, E15 is offered as an “alternative” fuel for flexible fuel vehicles (FFVs) only (alternative fuels for FFVs have different regulations than registered fuels for ordinary vehicles.) Efforts are under way to resolve the situation, but for now, E15 can only be sold to 2001 and newer vehicles from September 16 through May 31.
Can I use E15 in my lawnmower or other small engine equipment?
E15 has not been approved by EPA for use in non-automotive engines like boats, motorcycles, lawn mowers and other small or off-road engines because it wasn’t tested. E10, however, is approved for every on-road and off-road engine.