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Ethanol as low concentration component “E10”

In maximum, 5, 10 or 15% ethanol in gasoline can be used for conventional cars depending on the regional regulations. In Brazil, cars are slightly modified for ethanol concentrations up to some 25%. Exhaust emissions form new cars are low, and absolute differences between fuels are small in normal driving conditions. The effect of low-level ethanol on exhaust emissions is mainly seen at cold-start and heavy-driving conditions.

Ethanol properties

E10 gasoline blending

E10 emissions


IEA AMF work on low-concentration ethanol:


Other References:

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ETP 2011

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