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Field trials were conducted on two-stroke engine powered two-wheelers with 5%, 10 % ethanol and 3 % methanol. The performance and emissions of vehicles operating on these fuels were compared to those with neat gasoline up to 20,000 km. No significant change in fuel economy was observed with 5 % ethanol and 3 % methanol, however about 1.1 % loss was observed with 10 % ethanol. Emission test conducted after mileage build-up showed reduction of carbon monoxide (CO) with 5 % and 10 % ethanol, while increase of CO was observed with 3% methanol. Total hydrocarbon emissions increased on mileage build-up with all the test fuels. Merit rating of engine components after 20,000 km indicated that the ratings were better for 5 % ethanol blended gasoline. Startability and drivability problems were observed with 3% methanol after completing 10,000 km.