What's your highway MPG?

[HAIL STATE]

'15 Sierra - What's your highway MPG?

Let me know what your averaging in a 2015 4WD crew cab 5.3 and 6.2 on the highway only. Don't really care about city mileage. Make these realistic - you know, driving down the interstate at 70, 75, and 80 mph.

I have a new 2015 5.3 4WD Denali. Getting 18 on the highway going 75 mph. I'd say that's not even close to what GMC has on the window sticker.

 

[spamaster]

I have a 2015 2500 Denali with the 6.0 and cruising the down the hwy I get around 17. I get 9 when towing the trailer.

 

[locojoe]

I have an 06 Denali AWD with the 6.0L. I get 17 on the interstate and around 11 pulling a trailer.

 

[hemrides]

I have a 95 suburban and get 10 towing and 16 not. I thought all the new technology improved the mileage...glad I didn't spend all that money for nothing.