Lupient is good, I got my g8 there, I liked them better than Walser.I love it!!! I started this process in May with Brookdale Pontiac. They weren't very Knowledgable or helpful. Lupient was much better. I ordered my 09 from them in July and got it a month and half later. I was there last week to pick up my plates and they had quite a few in stock. To be honest, I haven't kept track of the MPG. I'm just happy not to have to use 92 as I did with my Grand Prix. I have been using 89. Good luck with you purchase!
I bought mine from Brookdale Pontiac, they had the best price, no one else could beat them. Are we it for Minnesota people? I have only seen 2 in the last year since I decided to buy one. I was waiting for pricing to go down, and now it did, paid 26,200 for a sticker price of 33,660 on a 2009 with 6 miles on it.
Too bad it doesn't have more of a following here. I have a Mustang and belong to TCStangs, we have a huge picinic every spring with all the Mustangs and give away prizes and stuff, wanted to do something like that with the G8, but I am kind of glad, noone else knows about what's under the hood so not a lot of buyers. Their loss!!!