I've had two Avalanches before buying a Ford Super Duty for the diesel engine...what a mistake! Don't know if it was the new '08 diesel 6.4L or what, but fuel economy was miserable, 12mpg in town, 16mpg on interstate with no towing. I also missed the versatility of the Avalanche: side cargo bins, heavy duty covers, waterproof rear bed, and the expandable bed size. Not only that, but the EXT adds significant comfort and features: NAV, DVD entertainment, heated/cooled seats, luxurious and beautiful interior, and great looks. Take it easy on the gas pedal and you'll be getting 15-16mpg in town, 20mpg on the interstate. Hauls tools, gear, toys, and projects with ease. The ultimate upgrade!
