2015 GMC Yukon XL Denali MPG (6.2L, 8-speed)
We did our first road trip last weekend in our new 2015 GMC Yukon XL Denali with the 6.2L and the new 8-speed transmission. Towed my brother's boat to AZ, no trailer on the return trip. And I was real...
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Thanks for the post, OP. Sounds like a great vehicle. Our best tank ever in our 2010 5.3 was 21.5 (avg speed about 63 mph) on a back roads trip. Incredible that GM is getting the same mpg with 100 more hp! The Yukon XL 6.2 is definitely in contention to replace our Suburban in a year or two.
