Jump to content

2014+ Gas Mileage (MPG) Topic

BringTheRain403
 Share

Recommended Posts

sourdough44 Enthusiast

sourdough44

Posted
Posted

I switched from a 2003 6.0 gas 2500 to the 2014 5.3. Rough numbers with just a 5 mpg improvement show a $1,000 annual fuel savings with 15,000 miles a year. I will most likely have less miles though as we drive our other cars more.

  • Replies 1.6k
  • Created
  • Last Reply

Top Posters In This Topic

Popular Days

Top Posters In This Topic

Popular Days

Popular Posts

Natek
Natek

I think if I was a salesmen I would research the products I would be selling. I wouldn't like it if a customer came in knowing more than me.

nibael
nibael

Mine gets pretty bad mileage at 180 mph. Maybe I should get a bed cover.

Eddie 70
Eddie 70

This was taken last week when I filled up. So far I have put this many miles on the truck. Hopefully it stays like this. We will see.  

Posted Images

Inacanyon Enthusiast

Inacanyon

Posted
Posted

Ok, we returned from the trip that we went on. The raw data after filling up for the above pictures 380 miles total before starting trip. The truck took 19.5 gallons and mpg worked out to 19.48 mpg on the 1st tank. Here are some pictures of the trip that had about 250 miles of mountain driving and flat land driving the rest of the way for a total of 1154 miles. So it works out this way. 1154 - 380 = 774 miles for the trip. On the trip we burned 37.5 gallons of gas for a gas mileage of 20.64 overall.

 

The best of it.

 

 

 

The part that has the most wow took place on the flat land. It was a reduce speed zone that went forever. The posted limit was 55mph and I set the cruise at 57mph. The CHP had people pull over on both sides of the freeway. In case you can't read it because the road was rough. The current mpg on the left said 28mpg. The best at 50 miles was 25.7 mpg and the avg. was 25.7 mpg

 

 

 

For the best 25 mile club went to this picture. Cruise set at 70mph. That was on flat land driving near Delano, CA on Interstate 99 going to Bakerfield, CA.

 

 

 

impressive for sure. if you don't speed with these things, they are unbelievable.

Newm Enthusiast

Newm

Posted
Posted

Just picked up my new truck yesterday out of state so I had a 248 mile journey home. Its a 4X4 Denali with the 6.2 and once I was outside of St. Louis rush hour traffic I was running 75 to 80 most of the way home. Figured at the pump I averaged 18.48 MPG...Display showed 18.6. I am tickled pink with these numbers on a brand new truck that had 6 miles on it when I left the lot. The motor feels tight and I can only imagine it will get better with some mileage.

Bikewhisperer Enthusiast

Bikewhisperer

Posted
Posted

I got tired of the uphill battle with my fuel economy and basically got a buy back and got the 2015 2500 denali. Getting 3mpg better than my 2014 with 3.08 gears after the first 250 miles.

 

Sent from my SGH-I337M using Tapatalk

strike1st Enthusiast

strike1st

Posted
Posted

I got tired of the uphill battle with my fuel economy and basically got a buy back and got the 2015 2500 denali. Getting 3mpg better than my 2014 with 3.08 gears after the first 250 miles.

 

Sent from my SGH-I337M using Tapatalk

When did you do that?!

Bikewhisperer Enthusiast

Bikewhisperer

Posted
Posted

Monday. It sure feels Iike a truck with the 4 or so inches higher and the stiffer ride. Got 18mpg on the drive to town this morning. Woot!

 

Don't get me wrong, I know the truck costs more and the maintenance is more. I'm not thinking this will cost me less long term, but I made a sacrifice in usability with the last truck for fuel economy and was keeping my old 2500 for heavy stuff. Now I can sell it.

 

Sent from my SGH-I337M using Tapatalk

nvrnuf4me Enthusiast

nvrnuf4me

Posted
Posted

IMG-20140423-00121_zps1af115f7.jpgI thought I would chime in and share today's mileage. Just so it's known, my commute to work from my house is 3.5 miles of dirt road to 40 miles of freeway driving to 4 miles of light to light. I have a Silverado CC SB w/ 5.3 and 3.42's. My normal average has been consistently between 20 and 22 mpg hand figured at each fill up. I have now personally put close to 9k miles on my truck, so it has seen its share of full tanks to conclude the average. Today must have been a fluke or hte truck was in a really good mood. On the way to work this morning at mile 41 of my commute, I happend to look down and see my DIC showing....Well, if I say it you probably wouldn't believe it. So, the picture should say it all....

strike1st Enthusiast

strike1st

Posted
Posted

Well...since there is another recall...I'll be letting my dealer take a look at the mileage issue early.

 

Hopefully Friday or early next week.

Newm Enthusiast

Newm

Posted
Posted

2nd fill up on the new truck....18.1 hand calculated with the DIC showing 18.8. This is about 80% or so highway mileage. Not to shabby for a big ole 6.2L.

patriot Enthusiast

patriot

Posted
Posted

Mine's about 20MPG mix of highway/city/mountains, and I'm not babying it. If I did, it'd be a bit higher.

 

5.3L

Crf450r420 Enthusiast

Crf450r420

Posted
Posted (edited)

Driving my 6.2 like a grandma still didn't get the ratings others have shown here. I get my best rating at about 45 mph with almost 30 mpg. My DIC best of 25 mpg is when stuck on a very long 55 mph highway. My DIC does jump around a little bit, but has averaged out to .5 mpg above actual usages. I'm still getting about the same mpg as my old 1995 Nissan V6 pickup I've had the last 15 years, so I'm happy about that when it's mixed with all of the extra room, four doors, towing capacity, payload, 4WD, and comfort. I think if the trans would just shift gears it could get better mpg and be smoother, coming from only driving stick shifts I expect it to be positive and this frustrates a lot. Here is my records so far with a mix of trying to get the best mpg and some playing in the mountains.

 

gallery_129354_2624_9995.png

Edited by Crf450r420
patriot Enthusiast

patriot

Posted
Posted

I average ~20MPG, city/mountains/highway combined. Not bad for a truck this size with a 5.3L engine.

My '02 w/4.8L averaged 16MPG on the same trips.

dodgehemi0 Enthusiast

dodgehemi0

Posted
Posted (edited)

I completed a 172 mile drive with my best gas mileage getting 23.2 on a 50 mile average. I average the whole trip at 20.4 and that is with the new 6.2 L in a crew cab 2014 Denali 4x4 doing 70 miles an hour down the interstate and in and around Nashville. That's better then my F150 eco-boost i had. Very happy so far. My lifetime average for 552 miles is 17.3. Not bad

 

 

Sent from my iPad mini using Tapatalk

Edited by dodgehemi0

Create an account or sign in to comment

You need to be a member in order to leave a comment

Create an account

Sign up for a new account in our community. It's easy!

Register a new account

Sign in

Already have an account? Sign in here.

Sign In Now
 Share
Go to topic listing

  • Recently Browsing   0 members

    • No registered users viewing this page.

  • Forum Statistics

    250.4k
    Total Topics
    2.7m
    Total Posts

  • Member Statistics

    342,760
    Total Members
    8,960
    Most Online
    MASONV88888888
    Newest Member
    MASONV88888888
    Joined

  • Who's Online   0 Members, 0 Anonymous, 1,519 Guests (See full list)

    • There are no registered users currently online

  • Latest Articles

  • Posts

    • Coastie05
      Replacing 2.7L on 2021 Silverado with 2023 2.7L

      By Coastie05 · Posted

      I’m definitely interested to hear the end result here. 
    • MASONV88888888
      Another 6.2L engine failure!

      By MASONV88888888 · Posted

      My 2025 Silverado 1500 had to receive a brand-new engine (long block) under warranty last month at only around 16,500 miles. Before the replacement, the truck repeatedly displayed "Engine Oil Level Low" warnings, even though the Oil Life Monitor still showed around 50% remaining after about 6,000 miles since my last oil change. After seeing the warning several times, I checked the dipstick with the engine cold, and the oil level was completely normal. The next day, the message escalated to "Add Engine Oil." At first, I assumed it was just a faulty oil level sensor, so I brought the truck to the dealership. After inspecting the engine, they found internal cylinder wall scoring and ultimately replaced the entire long block under warranty. Before this happened, I was planning to install a 4-inch lift and suspension upgrade on my truck. After needing a new engine at just 16,500 miles, I honestly don't see the point anymore. I also contacted GM to ask whether my vehicle qualified for a buyback, but I was informed that it does not at this time. Anyway, this experience has left me with serious concerns about the long-term reliability of this engine. I sincerely hope NHTSA expands the current investigation or recall to include 2025 model and performs a thorough inspection of affected vehicles. My biggest concern is that these engines may fail shortly after the powertrain warranty expires. If GM truly stands behind this engine, then at the very least, please consider extending the powertrain warranty to 10 years for affected owners. That would go a long way toward restoring customer confidence.
    • Grumpy Bear
      OCI, not when but why?

      By Grumpy Bear · Posted

      Without exception but then I'm the odd duck, right? I know what goes into that test, how it is calculated and thus how to beat it. But EPA values are often not beaten by the general public and the government has in past years adjusted the means and methods to come to those values to more closely approximate "Joe Average".    The only real trick to beating that EPA average is don't drive like "Joe Average".    It's the same method you used to profit from "Economic Migration" and in doing so beat the 'stats'. But you, like me, are not "Joe Average".     The thing you don't seem to grasp is this "Purchasing Power Index" isn't forward looking. It doesn't predict what it going to be but looks backward and states what it was. They are not telling us what the THINK, they are telling us what they MEASURED. Example:    Wife says "I'm going to lose 40 pounds by Christmas". May she does, maybe she doesn't but the doctors office who weighed her when she made that statement and again at Christmas only REPORTS what the RESULT was. You and I can banter about what was possible and what aunt Tilly did till the cows come home but the result is the result. Arguing otherwise is.....irrational. That's all I'm saying. This isn't about:      What you are calling a 'Statistic' is a RESULT not a CALCUATION and as a result the RULE. Like gravity as a rule, it can not be broken. 
    • MASONV88888888
      Rattle in the rear!

      By MASONV88888888 · Posted

      Just wanted to say thank you for posting this. Years later, your thread is still helping Silverado owners.   I bought my 2025 Silverado 1500 in January 2025, and I've had what feels like the exact same rattle since day one. After reading your findings, I believe my truck has the same issue with the cable carrier contacting the rear sliding window. To be honest, I had pretty much given up on pursuing the issue. It wasn't until I recently drove another brand's pickup that I realized just how quiet their cabin was—and how noisy mine has been all along. On my truck, the rattle happens on almost any paved road, gets even worse on rougher pavement, and I can even hear it during braking and acceleration.   I actually referenced your thread when submitting my case to GM, hoping they'll recognize this as a recurring issue instead of treating it as an isolated incident. The reason I reached out to GM first is because my dealership told me they would need to keep the truck for at least two days just to diagnose the problem. I was concerned that even after two days, they still might not be able to identify the source of the rattle before giving the truck back to me. I had also asked a few dealerships about this issue during previous service visits, but none of them seemed to know what was causing it or had a solution. That's why I decided to contact GM directly first, hoping they might already have an official repair procedure or guidance for this issue.   I also hope GM eventually comes up with an official fix for this problem. I have a feeling there are many Silverado owners experiencing the same rattle, but most either choose to live with it or simply don't know what the cause is.   Really appreciate you taking the time to document your diagnosis. Your post is still making a difference years later.
    • Buckwild27
      Gas Prices

      By Buckwild27 · Posted

      I have 2 choices. 

  • GM-Trucks.com Clubs

  • Popular Contributors

×
×
  • Create New...