Powertrains and Performance
The 2010 GMC Yukon Hybrid is available with rear-wheel or four-wheel drive. Both models utilize a 6.0-liter V8 engine coupled to a pair of 60-kilowatt electric motors located inside what GM calls an electrically variable transmission. Together, they produce 332 horsepower and 367 pound-feet of torque. The system can accelerate the Yukon up to speeds of approximately 25 mph using electricity only, while the V8's cylinder-deactivation system helps reduce fuel consumption at higher speeds. Regenerative braking replenishes the batteries by capturing energy normally lost when you come to a stop.
Fuel economy ratings stand at 21 mpg city/22 mpg highway and 22 mpg combined for rear-wheel-drive Yukon Hybrids, with 4WD versions earning identical numbers except combined, which is just 1 mpg less. Maximum towing capacity for a properly equipped 4WD model is 6,000 pounds.
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Driving Impressions
It's not a stretch to say that driving the 2010 GMC Yukon Hybrid feels like being behind the wheel of a 5,600-pound Prius. There's the same eerie quiet when accelerating and braking, as the gas engine shuts off to let the electric motors do their thing. Although it's a tad strange, the result is a quiet cabin, while transitions between gas and electric modes, and eight- and four-cylinder mode, are either undetectable or easy to ignore.
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