I purchased my Hybrid Tahoe exactly two weeks and 1360 miles ago. I am getting right between 21 and 22 mpg. The mileage includes one roundtrip from Dallas to Houston, but the rest is in-town start and stop driving. I had an '03 Tahoe that averaged 13 mpg, so I'm pretty happy thus far.

I had never seen a Tahoe Hybrid prior to my purchase, nor have I since. I'm really looking now that I have one, but have yet to see another one! The logos and decals certainly stir up interest. I can't go anywhere without someone stopping me and asking how I like it and what MPG I'm getting.

A few questions for those of you who own one...
1. Do you know anything about the emergency tire inflation system? I ran over an allen wrench in the Walmart parking lot today which resulted in a flat. Fortunately I was right across the street from Discount tire, who repaired it for me. I'm concerned about being without a spare.
2. How does the system decide whether it will be 4 or 8 cylinder?