Real Life MPG 5.3 / 6.2

Disclaimer: Links on this page pointing to Amazon, eBay and other sites may include affiliate code. If you click them and make a purchase, we may earn a small commission.

Stbentoak

Stbentoak

Full Access Member
Joined
Jul 20, 2020
Posts
1,707
Reaction score
1,971
tom3 said:
That premium fuel only would be a deal killer for me. Have to really need that extra HP for towing to make that worthwhile unless money is just not important. Does seem like the 2021s and newer use more gas than the previous models.
Click to expand...
Has always killed the deal for me. Most any desirable vehicle has to have premium, and they are charging + .80 over regular in my area. Gangsters.... Diesel is +.30 over RUL and I go 40% further on it.....
 
olyelr

olyelr

Full Access Member
Joined
Mar 19, 2011
Posts
1,709
Reaction score
852
Location
Elk Rapids, MI
The whole premium fuel thing…i think its kinda a joke myself. Put 125k on last denali with 6.2, never had nothing but regular in it, ran great, great fuel mileage. The ‘22 high country with 6.2 has 40k, never had nothing but regular, runs great. Maybe long term motor issues? I dono.
 
GoNoGo

GoNoGo

Full Access Member
Joined
Dec 8, 2022
Posts
213
Reaction score
188
Location
Elberton, GA
post Facelift 2022 and all 2023’s have customizable display clusters. i use the minimalist mode, love it
 
D

djnice

Member
Joined
Jan 13, 2024
Posts
85
Reaction score
39
helli47 said:
I just recently switched from a '21 Yukon at4 5.3 to a '22 Yukon at4 6.2. Right away i noticed the 6.2 had a big increase in fuel mileage of 18 mpg on interstate going between 80-87 mph. I couldn't dream of ever getting that with the 5.3. Best i seen on the 5.3 was 16 mpg and that was best, usually 13-14 mpg. My opinion right away would be the 6.2 hands down.
Click to expand...
This guy has 2 posts. Makes it hard to believe what he says. I agree at 85 my 5.3 is getting less than 16 mpg but there is wind, grade, etc. What does the 6.2 really do? Any back to back tests I have found show the 6.2 is around 2 mpg less than the 5.3.
 
OP
OP
X

xycrazy

Full Access Member
Joined
Mar 9, 2022
Posts
222
Reaction score
89
Yeah the 6.2 definitely consumes around 2mpg more. At least. I have a 2021 6.2 Escalade and I get maybe 20 on the highway and around 16 in the city. Combined it days 17.4mpg.

I drove a 2024 5.3 GMC Sierra as a rental for more than 3,000 miles and averaged 21.3mpg. On a shorter drive I even got 29.3 mpg. That‘s absolutely impressive and impossible to get even close to that with the 6.2. And I was impressed by how quick that thing accelerated. Felt even sportier from 0-40 than my 6.2. if they would sell the Escalade with the 5.3 I would have bought it.
 

Attachments

  • IMG_8580.jpeg
    IMG_8580.jpeg
    144 KB · Views: 2
  • IMG_7468.jpeg
    IMG_7468.jpeg
    136.7 KB · Views: 2
D

djnice

Member
Joined
Jan 13, 2024
Posts
85
Reaction score
39
I was looking ar motor trend tests on Yukon AT4. Not back to back.
2021 5.3
Avg = 15.5
Best tank = 20.9
2022 6.2
Avg = 13.4
Best tank = 15.9
 
OP
OP
X

xycrazy

Full Access Member
Joined
Mar 9, 2022
Posts
222
Reaction score
89
xycrazy said:
Yeah the 6.2 definitely consumes around 2mpg more. At least. I have a 2021 6.2 Escalade and I get maybe 20 on the highway and around 16 in the city. Combined it days 17.4mpg.

I drove a 2024 5.3 GMC Sierra as a rental for more than 3,000 miles and averaged 21.3mpg. On a shorter drive I even got 29.3 mpg. That‘s absolutely impressive and impossible to get even close to that with the 6.2. And I was impressed by how quick that thing accelerated. Felt even sportier from 0-40 than my 6.2. if they would sell the Escalade with the 5.3 I would have bought it.
Click to expand...
What's so funny about it @mikeyss?
 
Fless

Fless

Staff member
Super Moderator
Joined
Apr 2, 2017
Posts
12,155
Reaction score
24,792
Location
Elev 5,280
I'd caution about the accuracy of the electronic mpg calculations -- no vehicle I've ever had was anywhere near as accurate as a long-term actual miles-per-gallon-used calculation. They've been at least a couple of mpg off, sometimes more.
 
olyelr

olyelr

Full Access Member
Joined
Mar 19, 2011
Posts
1,709
Reaction score
852
Location
Elk Rapids, MI
Fless said:
I'd caution about the accuracy of the electronic mpg calculations -- no vehicle I've ever had was anywhere near as accurate as a long-term actual miles-per-gallon-used calculation. They've been at least a couple of mpg off, sometimes more.
Click to expand...
Yea, rarely perfectly accurate, and usually sway to the better side of mpg’s…but they are usually within the “ballpark”. I did a year long side by side calculation test on one of my rams…the computer was notoriously off about a mile per gallon (on the better side) vs the actual mileage/gallonage calculation, which is what the year long average off was. They are only so accurate. Close, but not perfect.
 
OP
OP
X

xycrazy

Full Access Member
Joined
Mar 9, 2022
Posts
222
Reaction score
89
Fless said:
I'd caution about the accuracy of the electronic mpg calculations -- no vehicle I've ever had was anywhere near as accurate as a long-term actual miles-per-gallon-used calculation. They've been at least a couple of mpg off, sometimes more.
Click to expand...
You‘re right. Instead of 21.3mpg I calculated 23.1 mpg manually… just saying
 
You must log in or register to reply here.

Similar threads

Duke Silver
Tracking down a misfire
Replies
5
Views
866
Fless
Fless
viven44
Fuel efficiency drop in newer models ?
3 4 5
Replies
46
Views
5K
viven44
viven44
M
Tranny Fluid & Filter change
Replies
1
Views
217
justirv
J
filthysuburban
2005 5.3 Ticking Journey
2 3
Replies
20
Views
5K
filthysuburban
filthysuburban
F
2005 5.3 lm7 Major issues!
Replies
5
Views
2K
GMfan72
G

Forum statistics

Threads
132,747
Posts
1,873,465
Members
97,571
Latest member
Firefiterp

Latest posts

Top