Have had the Tribeca for 5 months and 6,000 miles. Combination driving I am averaging 19.5 miles. In city - 17 to 18 which is as advertised. Highway only trips 22 - 24. We have had a Land Rover Discovery, Acura MDX, Mercedes ML 320 and Volvo XC70 - this vehicle is every bit as good and much less expensive. Because of those other SUVs I was smart enough to not get the built in Navi. Spent $250 on a Garmin. Almost bought BMW X5 but decided to save $20K - glad I did.
AWD is great in snow/ice. Like you would expect in a Subaru. Ipod port, interior styling. New front end for 2008 as well as the bigger engine. Great value for the dollars spent.
Only 2 improvements - a bigger gas tank. Approx 16 gallon just not big enough. Need at least 20 gallon. Make it available in more exterior colors. Love it otherwise though.