Average MPG in my 2011 Avalanche. Wow! 😮 

Nice , I’ve got a Gold 08 LT custom , has heated leather seats ,sunroof headrest DVD players & power everything, I love this truck it’s very reliable

My 2005 Z71 avalanche will do 20mpg on highway. My 1988 2wd square body suburban has gotten 23mpg on a 300 mile highway trip.

Yep I'd say 20.8 mpg is accurate. You should have the active fuel management, where your v8 shuts down 2 or 4 cylinders depending on power demand. Works great but has its fair share of problems. I have an 04 avalanche z71. No AFM, and average 16 mpg highway and 13 in town. In summer I roll with the back window down as well and love that air flow. You can't get that in a pickup or suv. Also love people's reactions when I load up with plywood and lumber and close the tailgate 😅

I’ve never seen 20. I get 16.2

You people paid for cruise control, use it.

I get the same in my 12 LTZ.

I have a 2007 Avalanche LS 5.3 Vortec and only get 11.5 MPG with E85 Fuel.

I am jealous, I'm not getting near that in mine.. What have you done to increase your MPGs? I've replaced spark plugs, O2 sensors, gotten new tires & keep the pressure correct, etc. I'm thinking I need to replace my fuel injectors and the fuel filter, but unfortunately in the Avalanche I would have to replace the entire fuel pump assembly to replace the filter. Any other ideas?

🙂☕👍

4x4 of 2wd