My average MPG is around 19. I drive country roads to work, and do very little city driving. Even when I do, it's in a smaller city, so there is no "stop and go" traffic to contend with.
It has a 20 gallon tank. It's interesting that while my previous car got such great MPG, I filled it about once every 6-7 days. The Envoy, while costing more to fill, has to be filled about every 9-10 days. That little difference in how long I can go before refueling makes a pretty big impact on how much the higher fuel costs hit my pocket book.
So, it costs more, but I have longer inbetween fueling. Does that make any sense?
Anyway, I love it even more now that I've gotten used to driving it. I do miss my convertable though, with all the nice weather we're having
I drove a co-workers Envoy, which had a V6. I was completely surprised at how much of a difference there is between her V6 and my V8. Mine rides so much better, is quieter, and has a shitload more get up and go than hers. I knew there would be a difference, I just didn't expect it to be so profound. We also get virtually the same MPG. We utilized the Driver Information Center in our vehicles to do some testing on gas consumption. I read online somewhere that that has to do with having such a large engine in a mid-sized SUV. Once you get going, it's easier for the larger engine to propel a lighter weight vehicle? Sounds like salesman talk to me, but other than that, I have no explaination why we would get the same MPG.