7 Months Ago, ConsumerReports.org says (in 2009 New York Auto Show: GMC Yukon Denali Hybrid, really?)  NY
However, Docherty lost me with when she said, “The Denali hybrid gets 21 mpg in the city, 22 on the highway. That's better city mileage than a Toyota Camry six-cylinder.” To accomplish that fuel economy in such a massive, capable vehicle is impressive. ...

And wot.motortrend.com says (in Home » WOT » When the Escalade Hybrid is Too Ostentatious: The ...) The eight-passenger GMC Yukon Denali Hybrid goes just as far on a gallon of gas in the city as a much smaller, V-6 Toyota Camry sedan," said Susan Docherty, vice president of Buick-Pontiac-GMC for GM. "And in terms of fuel savings, the GMC Yukon ...

And CanadianDriver says (in GMC to unveil Yukon Denali Hybrid in New York)  Canada
“The eight-passenger GMC Yukon Denali Hybrid goes just as far on a gallon of gas in the city as a much smaller, V6 Toyota Camry sedan,” said Susan Docherty, vice-president of Buick-Pontiac-GMC. “And in terms of fuel savings, the GMC Yukon Denali saves ...