I've definately broke the 40 mpg limit. Not because I ran premium gas, but maybe because I had an "bottom of the barrel gas", I hypothesize that the store was almost out of gas, so it was slow to pump, and I had an usual mixture. The octane rating is an average, that means it' possible to get more octane. That week, I drove only highway too, my fiancee visited me, so I only drove in town once that week for church.
I mostly drive on the highway. I get my worst gas in town and on the interstate. I average 34-36 but there has been at least one time where I got more gas. I always use premium, BP or Shell--the only name brand gas out this way.
I need all the fuel economy I can get. I drive 350+ miles per week.
I drive 2001 Hyundai Elantra, standard transmission. With 87 octane, I get 28-32 mpg.
It was cold for April, but not too cold for TN. I do notice that my engine seems more sluggish in the afternoon when it's warmer.
Last edited by whicky1978 : 04-18-2007 at 03:22 AM.