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2019 6.2L MPG

aha1987

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NWI Denali Enthusiast

NWI Denali

Posted
Posted

Trail grapplers are one of the heaviest tires you can buy. Your 275/65/20 is a 68 lb tire. Your OEM takeoffs were probably in the range of 44 lbs. Adding 24 lbs in unsprung weight per corner is crippling. I'm honestly surprised you're even getting 17 mpg with those tires. I would have guessed 14ish.

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ECGolfer04 Enthusiast

ECGolfer04

Posted
Posted
5 hours ago, Aycock1987 said:

I have a new 2019 Silverado with the 10 speed 6.2L. I have about 1300 miles on it. The average mpg that I have been able to get is 16 mpg. I feel like this is low. Not to mention I have been babying it. FYI, I did put some bigger tires ( 275/65/20 which is a 34 inch) and a level on it but I wouldn’t think it would make that big of a difference. I had the same setup on my 2017 6.2L and I feel like I got better MPG.

 

Can others tell tell me what they are getting in their 6.2L?

 

I agree completely.  I am 5,000mi in on my 6.2L LTZ and best I've seen is an average around 16 - 16.5 avg mpg.  I would say normal driving habits, no lead foot.  My '16 6.2L was around 18mpg or so.  Both vehicles equipped with max tow pkg, identical drivetrains.  The only difference currently is my '19 does not have a tonneau cover installed yet.. that will be next week.  Not sure if that will do it or not, but for now, I feel my '16 got better gas mileage.

aha1987 Enthusiast

aha1987

Posted
  • Author
Posted
1 hour ago, gothp28 said:

It looks great was there any rubbing or anything like that? That is the tire I'm looking at as well. I'm putting it on a at4.

Sent from my SM-G965U using Tapatalk
 

It has rubbed a time or so but it doesn’t in normal driving conditions 

steve841 Enthusiast

steve841

Posted
Posted

With all the gimmicks added to this motor + 10 speed tranny, I was shocked it was no better than my 14 6.2L mileage.

 

 

ish New Member

ish

Posted
Posted

I'm getting 16 mpg avg in my AT4 6.2L with 20 inch rims and stock tires. A 90% hwy trip, I get 18 mpg.

Grumpy Bear Senior Enthusiast

Grumpy Bear

Posted
Posted

Do ever thing possible to lower your mileage. Then act surprised. Why? Why are you surprised and disappointed? 

fish_guru Enthusiast

fish_guru

Posted
Posted

I'm getting around 15 overall with mostly city miles. I have taken one brief road trip and I was averaging 19. The best 50 mile stretch I've had was 21.2. Basically the same as my '07 with the 5.3L.

 

She's got just over 1500 miles now.

aha1987 Enthusiast

aha1987

Posted
  • Author
Posted
9 hours ago, Grumpy Bear said:

Do ever thing possible to lower your mileage. Then act surprised. Why? Why are you surprised and disappointed? 

I am surprised because I had a 2017 Silverado with the 6.2L and same setup and it got better MPG than my 2019.

gothp28 Enthusiast

gothp28

Posted
Posted

Hopefully you just need to break the motor in a little bit more. Usually the bigger motors get worse gas mileage when it's cold out could play a factor.

Sent from my SM-G965U using Tapatalk

Colossus Senior Enthusiast

Colossus

Posted
Posted

Does the octane rating you use make a difference with the MPG you are getting in the 6.2?

RyanbabZ71 Senior Enthusiast

RyanbabZ71

Posted
Posted

Can you run E85 in the 6.2 or is it like the K2 version where its not compatable?  

  • 1 year later...
kmisak New Member

kmisak

Posted
Posted

I have a 2019 6.2L GMS Sierra Denali with 1500 miles on it... so far I am averaging 18.3 mpg.  I have the same wheels and tires the truck came with.  I have also done quite a few 0-60 and 0-100 test, so I am not babying it. 

IMG_1088.JPG

OHDenali Enthusiast

OHDenali

Posted
Posted

I've been getting 18-21 highway. Big difference 65 mph vs 75 mph.

 

Pic is after towing a 4k lb. trailer through KY, TN, AL and back doing the legal speed limit(not exactly flat).

 

100% stock 6.2 10 speed. 

 

20191020_173239.jpg

drucker Enthusiast

drucker

Posted
Posted

I have 24,xxx miles on my 6.2 HC and have a lifetime average of 18.7mpg. I have factory wheels (22) and the factory tires with a level. 

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