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Environmental Issues
Elements and Compounds
US Coast Guard

Is E85 better than gasoline Does it pollute more than regualr gasoline?


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February 17, 2008 6:44PM

As for typical tailpipe measured emissions, E85 is % better for the environment. Even 10% ethanol (or gasahol) fuels are a % better.

E85 or E100 (pure ethanol) has more O2 present in the fuel and has significantly less CO emissions that pure gasoline or 10% ethanol gasoline.

E85 or E100 has a the same or slightly higher HC emissions than pure gasoline.

Typically NOx emissions are on par with gasoline fueled vehicles.

As for non typical measured tailpipe emissions, I have not seen conclusive data on other emissions emitted from the tailpipe.