Ultra-performance supercars aside, sport-utility vehicles get some of the worst gas-mileage numbers of all. Vehicles like Range Rovers and Escalades post city ratings just barely nudging into the two-figure range--and the same is true for the less luxurious Nissan Armada.
The seven-passenger Armada scores very low fuel economy ratings from the EPA. At best, the rear-drive Armada is pegged at 13/19 mpg. Adding four-wheel drive to the mix drops those figures to 12/18 mpg. There's no option for diesel or hybrid power to mitigate the situation either--the Armada comes only in one form, with a big V-8 and an automatic transmission.