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2020 5.3L gas mileage

ljramsey
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econometrics Senior Enthusiast

econometrics

Posted
Posted

My 5.3L / 8spd 2019 RST can be a bit all over the place. I've noticed this truck is very touchy with wind. 

 

E.g. I have a slight headwind, and I'll "only" get 20mpg doing 70-75mph. 

 

However, get a bit of a tailwind, and you'll get 26-28mpg doing the same MPH. It's really wild. 

Gangly Senior Enthusiast

Gangly

Posted
Posted

My 20 5.3 Z71 with 8-speed is averaging around 19 mpg.  On the highway with the cruise set at 71-72mph, it will get upwards of 22mpg while occasionally clipping 23 mpg.  Also owning an F250 gasser, this thing is ludicrous.

Megalomegalodon Enthusiast

Megalomegalodon

Posted
Posted

2020 SLT 8spd with 3100 miles. My trip B was never reset and it reads 17.8mpg. I feel that is pretty good considering I live in SoCAL and freeway driving is pretty much stop and go 75% of the time.

Jrodpic Enthusiast

Jrodpic

Posted
Posted

2020 Trail Boss 5.3 10 speed with around 900 miles. Also have a tonneau cover.  First trip of a few hundred miles got about 19 MPG highway. Wasn’t too impressed. However I’ve heard MPG improves after break in. We will see.

Andyh1 Enthusiast

Andyh1

Posted
Posted

My Elevation MY 20 work 8 speed was a solid 23-24mpg cruising 65-68 mph stock.

Once I added the level and upgraded to 285/60 AT tires, it's dropped to 21 MPG... Very happy with it.

Sent from my SM-N975U using Tapatalk

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