With gas prices approaching an all time high, what happens to your Q7 when you put the cheaper gas in it? Anything? Or is it just a stigma that goes along with a "performance car"? The Q7 (especially the 3.6) sure doesn't feel like a performance car... Is it OK to put regular unleaded in your Q7 while gas is so high? Or is it a big NO NO? []

I always put the premium in our Q7. However, on one occassion, I was using the dealer's service loaner, an A4, and I accidentally put regular unleaded in it. Honestly, I didn't notice any difference, but my short experience with the A4 (2 days) probably wouldn't tell me if something was wrong.