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Old 06-01-2019, 10:29 PM   #11 (permalink)
ksa8907
Master EcoModder
 
Join Date: May 2012
Location: Indiana
Posts: 1,528

Volt, gas only - '12 Chevrolet Volt Premium
90 day: 38.02 mpg (US)

Volt, electric only - '12 Chevrolet Volt Premium
90 day: 132.26 mpg (US)

Yukon Denali Hybrid - '12 GMC Yukon Denali Hybrid
90 day: 21.48 mpg (US)
Thanks: 164
Thanked 333 Times in 232 Posts
My take on the Yukon hybrid is it is the best darn stop start system you can get. The vehicle can be driven on electric only for a short distance, very similar to the Prius, but generally runs the engine by 10mph from a stop.

Our Denali is 4wd, doesn't have any of the aero enhancements, and has the 22"wheels. We average about 19-21 mpg but it is still better than the 12/18 rating of the non-hybrid.

If you want better mileage from one of these, just slow down. By far the least efficient aspect is the aerodynamic load.

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