Ford's 2012 F-150 EcoBoost 4x4 has a new standard feature -- a 36-gallon fuel tank that lets you drive farther on a tank of gas. The truck's EPA rating is 21 mpg on the highway, so if you achieve that number you'll be able to drive up to 756 miles before stopping for a fill-up.

Ford puts the miles into perspective with a few examples:

• Drive from Atlanta to Detroit without stopping for gas
• Travel from Houston to ElPaso without stopping to refill

You won't get optimal mileage in start and stop conditions, but it's reasonable to expect close to the EPA's estimate when you're cruising on the highway. The F-150 EcoBoost is growing in popularity, and since spring of 2011 has accounted for about 40-percent of all F-150 sales. The engine delivers 365-hp and 420 lb.-ft. of torque, along with a towing capability of 11,300 pounds.

You'll pay $750 to upgrade from the 5.0 liter V8 to the EcoBoost engine.