PLEASE HELP ME OUT. - Toyota Yaris Forums

shepd · 07-16-2015, 12:16 PM

I also used to think higher octane fuel was pointless, and it is *except* in some places, premium fuel is the only fuel without ethanol.

Ethanol is basically filler, so you will get better performance (though less than you'd expect) on a fuel with no ethanol, which nowadays seems to be 91 octane. :( And by performance, most of what I've experienced is better mpg, not acceleration.

07-16-2015, 12:16 PM	#10
shepd Drives: 2007 Yaris 5 door RS Join Date: Nov 2014 Location: Kitchener, ON Posts: 178	I also used to think higher octane fuel was pointless, and it is except in some places, premium fuel is the only fuel without ethanol. Ethanol is basically filler, so you will get better performance (though less than you'd expect) on a fuel with no ethanol, which nowadays seems to be 91 octane. :( And by performance, most of what I've experienced is better mpg, not acceleration.