Gas mileage

[1BADRAMLIMITED]

You should take it back to the dealership and say it's broke then.
No way you are legit getting 9 mpg unless you somehow slapped 200k miles on your truck and have a gunked up engine.

yea honestly idk what it is. the truck runs clean no issues. ive cleaned the injectors and changed spark plugs. idk what else i can do.

im really considering a new 5th gen with eco diesel or something more fuel efficent since i dont tow or anything to crazy

 

[theblet]

yea honestly idk what it is. the truck runs clean no issues i can tell of also cleaned the injectors and shanged spark plugs. idk what else i can do.

im really considering a new 5th gen with eco diesel or something more fuel efficent since i dont tow or anything to crazy

What does hand calc show?

 

[Av1]

yea honestly idk what it is. the truck runs clean no issues i can tell of also cleaned the injectors and shanged spark plugs. idk what else i can do.

im really considering a new 5th gen with eco diesel or something more fuel efficent since i dont tow or anything to crazy

I haven't followed the thread closely. Are your fuel economy calculations done by hand? Also, have you accurately corrected your speedometer for tire size?

If the answer to either or both of the above is no, then it doesn't matter. The data will not be accurate.

The vehicle fuel economy displays are notoriously inaccurate. Sometimes they are close and sometimes they are not. It's the changing delta that is the problem. It often changes with each fill up to a degree. That is not unique to RAM. It's common among all vehicles. I know folks say their vehicle indication is always the same or very close, but that hasn't been my experience across many vehicles for many years of tracking fuel economy.

Once you have accurate data to compare, the next step is to make sure there are no mechanical or tire pressure issues.

The last thing, and most important in my opinion, is your driving. You can make an immense difference in fuel economy just by how you drive. That does not mean to drive slow everywhere. Throttle control is everything. It takes practice. Nobody wants to hear their driving may be contributing the most to fuel economy woes, but it often does. I learned throttle control from riding motorcycles. High sides are very unforgiving to your bones.

As for me, I track fuel economy for the data. It's fun.

I know my Ram is not very fuel efficient and there are a ton of people whose driving habits, altitude, and terrain get much better numbers that I do. But I didn't buy it for the fuel economy. It wasn't even a passing thought.

 

[Peter41692]

Shoulda got 3.21’s

Sorry I couldn’t resist.

I would say your likely not real far off this time of the year with those tires. Best I see is in warmer summer temps when I average 17-18. Late fall-late spring I easily drop 2-3 mpg. Very few g,,et the rated MPG on the sticker unless driving perfect conditions at a lower to moderate highway speed. Seems like 55 mph is the sweet spot which I NEVER drive at.

A recent trip to the west coast of Florida. 21 Laramie Hemi ET, 392, 4x4, 6.4" box.

You do realize you can calculate actual miles driving based on error percentage of the tire size when doing hand calculating

 

[theblet]

A recent trip to the west coast of Florida. 21 Laramie Hemi ET, 392, 4x4, 6.4" box.View attachment 173719

Nice. What speed and did you use the cruise control?

 

[Av1]

I don't know if this has been posted already. If so, disregard.

www.fueleconomy.gov is a fantastic source of fuel economy information.

You could spend hours reading if you are so inclined.

 

[Peter41692]

Nice. What speed and did you use the cruise control?

No cruise control. From Stuart, Fl to the west coast the roads (70 and 72) are 2 lanes with limited passing lanes.
The speed limit average is around 50mph. I would say my average is 62-65 and on an occasion 75+ when passing multiple trucks.

 

[1BADRAMLIMITED]

A recent trip to the west coast of Florida. 21 Laramie Hemi ET, 392, 4x4, 6.4" box.View attachment 173719

Man I wish……

 

[Idahoktm]

Man I wish……

If you're going to get crappy MPG's like that, you might as well trade that Limited in for a TRX and have a little fun.

 

[1BADRAMLIMITED]

If you're going to get crappy MPG's like that, you might as well trade that Limited in for a TRX and have a little fun.

If I could afford it I would.

 

[irishwake63]

Im getting a solid 22 mpg on all hwy driving and about 7-8 towing my 7k camper

 

[f.zanetti]

If it serves as a comparison, I just completed a 2000 mile trip with my brand new 2024 Limited 5.7eTorque and averaged ~17mpg without cruise control and traveling between 70-80 mph with 5 occupants in the truck.

 

[Biga]

I can get a the advertised 22MPG on long highway drives if I keep the speed to around 70-72 mph. At 75-80 MPH I get about 20 MPG.

 

[Dewey]

I can easily get 20 mpg but what fun is that? The Hemi likes to be exercised and I’m more than happy to feed the throttle.

This is mine over the last 4 1/2 months.

 

[slimchance]

read this whole thread ... guess i am doing something wrong .. look at my Fuelly!

 

[1BADRAMLIMITED]

I can easily get 20 mpg but what fun is that? The Hemi likes to be exercised and I’m more than happy to feed the throttle.

This is mine over the last 4 1/2 months.

View attachment 173784

What app are u using to log mpg?

 

[Dewey]

What app are u using to log mpg?

Fuelly

 

[jonnygobig]

yea honestly idk what it is. the truck runs clean no issues i can tell of also cleaned the injectors and shanged spark plugs. idk what else i can do.

im really considering a new 5th gen with eco diesel or something more fuel efficent since i dont tow or anything to crazy

AV 1 is right if there was an order of

If it serves as a comparison, I just completed a 2000 mile trip with my brand new 2024 Limited 5.7eTorque and averaged ~17mpg without cruise control and traveling between 70-80 mph with 5 occupants in the truck.

this sounds comparable to my 14-15 hiway 2019, 5.7 no Etorq, also 392 on 35” KO, 6” lift. Much worse in town. Basically runs by the hour. Wish I had 33 gallons…

 

[Fastxn]

So I'm averaging around 17 mpg. No complaints, I knew it wasn't a Prius. Full size truck, 4 wd, big Hemi V8. So....... just read a review in Car & Driver of the Chevy Colorado ZR2. Turbo 4, smaller truck, 16mpg. Now that would make me complain!! I feel better!

 

[DEG]

Averaged 17.3 on a recent 3000 mile road trip from St Louis to Green Valley AZ. About the same as my last truck. Mostly 75 mph highway driving. Pretty strong wind working against me on the way down. There were several tanks that approached 19. When I manually calculate the truck's computer normally reads about 1/2 mpg better than what I get hand calculation.