MPG 3.92 compared to 3.21 ?

[Lando]

I was wandering what kind of gas mileage everyone was getting with their 2019 Rams? I have the Laramie with the 3.92 with 240 miles on it and only getting 13.4 mpg. Plus I drive with a very light foot.

 

[Firebird]

My buddy with 3.21 gears could only get 13.5, and he wished he had gotten 3.92's

 

[corneileous]

Your motor’s still gettin’ broke in, too.


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[o2cmefly]

Your motor’s still gettin’ broke in, too.


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What he said^^^^^. I wouldn’t even look at the mileage numbers until after 1,000 miles or so, and maybe not even until after the first oil change (please do it sooner than the ‘truck tells you’). Let it break in good first, then see what it’s doing. I know plenty of 5.7 hemi owners in various vehicles (RAMs, Durangos, Chargers, etc.) that all get much better fuel economy after it’s broken in.

 

[miketx]

I have a 4th gen (4x4 Rebel with 3.92) with 31k miles. I get ~ 14.5 mpg with easy city driving. Given the 4x4 system and heavy 10 ply (E rated OEM) tires, it seems about right.

 

[WilliamS]

my 2014 with 3.21 8 speed 4x4 with my 295/65/20 averages 16.8 mpg mixed driving, my 2018 with 3.92 8 speed 4x4 with the exact same tires is averaging 16.4 so far. I can say the 3.92 actually picked up .5 mpg last week when i put the larger tires on? Not sure why but who am I to complain.

I think Im about the perfect example as my commute is within a minute every day its 75% highway 25% city and i can tell someone within a minute of when Ill be at work or home barring an accident. Having an identical setup with level and tires I think Im about the best guinea pig.

 

[DRkNESS]

My 2019 DT has over 10,000 miles on it with 3.92 gears and I’m only getting 14mpg lol. So I’m pretty sure that I’m more then “ broke “ in.

 

[NoveskeFan]

3.21 here, 27,*** miles. Avg is close to 19mpg. I typically turn off MDS.

 

[WilliamS]

3.21 here, 27,*** miles. Avg is close to 19mpg. I typically turn off MDS.

That where mine was till i strapped on the heavy tires, then it got real cranky.

 

[Musky Mike]

I have a Bighorn, 4x4, Off Road Package, Crew Cab and 3.92s. With 2000 miles on it, I’m getting 14-15 city and 18-19 highway. (MDS off)

 

[miketx]

I have a Bighorn, 4x4, Off Road Package, Crew Cab and 3.92s. With 2000 miles on it, I’m getting 14-15 city and 18-19 highway. (MDS off)

That's pretty much what I get (I only quoted city driving in my previous post).

That is the best way to answer the post: city only, mixed, or hwy driving. I'm assuming the original poster was quoting city driving only. And some other posts I believe are quoting a mix of city/hwy.
If I have mixed driving, I can get 15+. Pure hwy driving, I can get 18-19 (even higher if I slow down to 60-65 with MDS kicked in......but no one drives that speed in Texas...haha).

 

[mohemipar]

Fuel eco can vary a lot between person to person due to driving habits, climate, environment/terrain, engine mileage. MPG differences would also be assuming you would drive both gear sets exactly the same. Bottom line is the difference is negligible and we are already talking about a truck that gets under 20. Just get what you want and don’t worry about it.

 

[miketx]

Mohemipar......agree. When I was focused on MPG, I looked at Ecodiesels. But I couldn't find the right truck (options, and dealer willing to negotiate and take my cash), so I decided a used Rebel with 5.7 was good enough (plus the wife gave it a "thumbs up").

 

[Rogues Gambit]

12ish here, mostly city with 10-20% highway and lead foot to boot

Happy with it though, does all I need so why worry about the mileage?

 

[JoeCo]

12ish here, mostly city with 10-20% highway and lead foot to boot

Happy with it though, does all I need so why worry about the mileage?

I'm with you, I understand why some people care about the gas mileage but to me it doesn't matter. The vehicles I own I want for various reasons, none of them mpg. That being said even with my 93 octane tune in this truck still gets the best gas mileage I've ever gotten and I drive it the way I want to and enjoy it. I watch everything in my finances very closely, other than fuel. I know it costs a lot but to me it's just the "price of doing business" and I'd rather not know what I spend in a year between 93 octane and 90 octane ethanol free for my 66 buick.

Not to mention, these are heavy full size trucks with a powerful v8, even getting halfway decent mpg is a complete bonus in my opinion.

 

[Rogues Gambit]

I'm with you, I understand why some people care about the gas mileage but to me it doesn't matter. The vehicles I own I want for various reasons, none of them mpg. That being said even with my 93 octane tune in this truck still gets the best gas mileage I've ever gotten and I drive it the way I want to and enjoy it. I watch everything in my finances very closely, other than fuel. I know it costs a lot but to me it's just the "price of doing business" and I'd rather not know what I spend in a year between 93 octane and 90 octane ethanol free for my 66 buick.

Not to mention, these are heavy full size trucks with a powerful v8, even getting halfway decent mpg is a complete bonus in my opinion.

Exactly, and if you're concerned about MPG's, always a hybrid

 

[JoeCo]

Exactly, and if you're concerned about MPG's, always a hybrid

Hahaha that's good stuff. Yeah if mpg is really truly that important, a full size pickup doesn't really make sense.

 

[runamuck]

I just returned from Taos nm to dfw..650 miles each way. got as high as 19 in the mountains but on the way back to dfw mileage slowly dropped from 19 to 15.5 by the time I got home. going downhill all the way at 77 with cruise set, the mileage just dropped all the way home. after a few short trips around town on the freeway, I am at 14.8. I would accept that for in town but was expecting better on the highway. I have about 3500 miles on truck.

 

[PoMansRam]

I was wandering what kind of gas mileage everyone was getting with their 2019 Rams? I have the Laramie with the 3.92 with 240 miles on it and only getting 13.4 mpg. Plus I drive with a very light foot.

240mi isn't enough to determine what you are actually getting in terms of MPG. The dash readout is probably reading on the high side compared to calculating it by hand as well.

To me, the only MPG figure that matters is what I average over an entire tank of fuel. Short trips are going to be all over the place.

Like said, cold weather, tires and winter blend fuels effect fuel economy big time.

I know 14mpg sounds horrible compared to my Pentastar's 19-24, but at the end of the day it's a $1000 different in fuel cost for the year based on today's fuel cost. Not that big a deal.

 

[WilliamS]

I know 14mpg sounds horrible compared to my Pentastar's 19-24, but at the end of the day it's a $1000 different in fuel cost for the year based on today's fuel cost. Not that big a deal.

Holy cow there is someone that can do math! Its always amazing the people that miss this key factor. For many its less per year in the difference based on miles driven. I love my Hemi, I love my heavy tires, if I need MPG Ill drive my wifes Escape turbo. Although our family daily driver is my Ram. It gets driven 50 miles per day every day of the year, it never takes a break.