Developed in the wake of more environmentally conscious driving, the 2012 GMC Yukon Hybrid preserves the large sport utility capabilities while achieving better fuel economy. Powered by a Vortec 6-liter V-8 gasoline engine, the 2012 Yukon Hybrid combines with a very unique 4-speed automatic gearbox. Called a two-mode transmission, the two electric motors are employed to either a rear or all-wheel drive system. Amounting to a total power production of 332 horsepower, the 2012 GMC Yukon Hybrid grants fuel efficiency of 20 miles per gallon city and 23 mile per gallon highway. Sporting a heavy duty rear differential, this efficient large utility vehicle can also effectively tow up to 6,200 pounds. Apart from the gasoline/electric powertrain, the 2012 Yukon Hybrid impresses with a wealth of standard features including OnStar, tri-zone climate control, XM NavTraffic and Bluetooth connectivity. A Yukon Denali Hybrid model is also available providing 22-inch wheels and other luxury appearance items.