Though gas mileage ratings for GM's full-size SUVs are impressive among their competitive set, they aren't likely to bring smiles to anyone at the pump; their combined ratings still linger in the teens. The Yukon Hybrid changes that, to a degree. Along with its twin, the Chevrolet Tahoe Hybrid, the Yukon Hybrid promises an improvement in overall gas mileage. The Yukon Hybrid is only available with a short wheelbase, but it comes with either rear- or four-wheel drive. It seats eight.

New for 2012

The Yukon Hybrid gets a revised touch-screen navigation radio that includes a USB port and the ability to record broadcast audio.