Higher octane fuel - Toyota Yaris Forums

Yar Is Word · 02-23-2009, 03:02 AM

I used premium in an ECHO for 5 years and always from name brands, not the cheap gas. The car simply ran smoother, it had more power, and got better mpg (about 2 per gallon). The increase in mpg did not cover the increase in cost but the peace of mind was worth it.
In the Yaris the first two tanks were regular. I felt the acceleration could improve. Since premium was put in a difference has been noticed. The car is relatively new so I don't have any long term mpg improvement data.
I have read a couple studies and many opinions such as the ones above stating that it's a waste but that has not been my experience.
A simple test would be to run premium for a few tanks and see if you notice any improvements.

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02-23-2009, 03:02 AM	#8
Yar Is Word Drives: Yaris 5 door liftback Join Date: Jan 2009 Location: Portland, OR Posts: 648	I used premium in an ECHO for 5 years and always from name brands, not the cheap gas. The car simply ran smoother, it had more power, and got better mpg (about 2 per gallon). The increase in mpg did not cover the increase in cost but the peace of mind was worth it. In the Yaris the first two tanks were regular. I felt the acceleration could improve. Since premium was put in a difference has been noticed. The car is relatively new so I don't have any long term mpg improvement data. I have read a couple studies and many opinions such as the ones above stating that it's a waste but that has not been my experience. A simple test would be to run premium for a few tanks and see if you notice any improvements.