[Bigslick]

The average consumer is 'afraid' of a car that requires premium, so every sales person will tell you to use regular. They don't want to create doubt in the consumer's mind. Doubt frequently = buy something else.

If you care, the motor will run noticeably better on premium. I notice the difference imediately, my wife couldn't tell at all.

For some, a car is just an appliance. For others, it is whole lot more involved.

Good luck.

I tested 3 tanks of regular then noted my thoughts + MPG and then 3 tanks of Premium and on the final of the 3 tanks noted the same.

Regular 24.2 MPG (Mixed FWY and City)

Premium 26.5 MPG same commute. I also noticed it felt more peppy, but this could be in my head.

So MPG's wise it helped somewhat.. enough I think to offset the increase in price.

 

[Bigslick]

I came across this.. The page is the same for the 4Cyl Models and the 2.5L models.. Interesting but not surprising.