Poor gas mileage

[1791]

There is no "chip" that does what it claims. For your truck, the JB4 piggy back tuner is the only thing available right now and it gets you close to 100hp increase

the pulsar has been dyno proven to give you about 33 hp and 51 tq at 3300 on the 93 performance tune not really any gain at red line but off idle to 4500 is a good place for a power gain.

 

[HSKR R/T]

the pulsar has been dyno proven to give you about 33 hp and 51 tq at 3300 on the 93 performance tune not really any gain at red line but off idle to 4500 is a good place for a power gain.

I have a Pulsar, checkmy signature. But they don't have one for the 2025s

 

[1791]

I have a Pulsar, checkmy signature. But they don't have one for the 2025s

got ya, maybe it's just me but i wouldn't mod a 2025 i feel like they are gonna need the warranty to stay intact.

 

[Ramboy13]

got ya, maybe it's just me but i wouldn't mod a 2025 i feel like they are gonna need the warranty to stay intact.

And anyway, if the HO isn't good enough, you're probably in the wrong vehicle.

 

[HSKR R/T]

got ya, maybe it's just me but i wouldn't mod a 2025 i feel like they are gonna need the warranty to stay intact.

Considering RAM has built a Hurricane that pushes close to 1000ho, I don't think there will be an issue of them staying intact. That's just ignorance about how turbo engines work

 

[HSKR R/T]

And anyway, if the HO isn't good enough, you're probably in the wrong vehicle.

You must not like the TRX then

 

[Ramboy13]

You must not like the TRX then

LOL - good point. But the TRX is a whole different category in my mind.

 

[Trooper4]

And anyway, if the HO isn't good enough, you're probably in the wrong vehicle.

Right. These trucks compared to the 60's 426 hemi.

425 hp (317 kW) (Gross) 350 bhp (261 kW) (Net) --------- 395 horsepower at 5,600 rpm
490 lb⋅ft (664 N⋅m) ------------ 410 lb-ft at 3,950 rpm

These trucke are not lacking in power.

 

[Upupandaway]

Just adding my two cents to this thread. I have a 2020 eTorque Limited, only modifications are a tonneau cover and D-load 275/60/20 K02's. I've only had the truck for a few weeks so I've never experienced the truck in the summer on summer gas, but on dead flat ground doing 110kph/7-mph, my truck gets 16mpg yet is rated for 21.5mpg(converted from CAD L/100km to MPG). Around town it gets 11.5mpg yet is rated for 16.5mpg. I traded in my previous truck for this, a 2014 Sport Crew cab with Ramboxes, Tonneau, 4" RC Lift, 325/60/20 tires on 10" wide rims, rear helper bags, etc. My Limited doesnt have ram boxes and the only real feature it has beyond my Sport that could weigh anything meaningful is the moon roof and eTorque system - but I figure the mods to my old one would put them at the same weight. For reference, my 2014 got the same MPG as my 2020 on the highway.

Anyways, I've never taken the EPA numbers seriously because I know manufacturers use their bone stock base models to achieve those numbers, but right now I'm pulling 25-30% under their ratings which I think is pretty drastic and unacceptable. I drive like I'm 90, probably rarely see 3k RPM, and on the highway keep it around 110kph/70mph.

This sounds like a common issue with these trucks - has anyone found a solution, taken recourse against FCA, etc? I'm tempting to bring it back in and say I should be at least within 10% of the ratings (and I'd be happy) but 30% around town seems excessive, especially with a stop-start system.

Thanks.

edit I have 3.21 gears

Just an update on this - the truck is now at the dealer to get looked at. My last 1000km/600miles I have averaged 21L/100km, or 11.2mpg, which is almost exactly half the manufacturers rating for combined city/highway driving. Fortunately, the dealer themselves didn't hesitate to acknowledge that something must be wrong so they are gonna hopefully sort it out. The service advisors own 2500 cummins gets better combined mileage so it was pretty easy to convey the issue.

Along with the mpg issue, it's also in for the following(which is laughable since I only bought 3 weeks ago)

1. Puddles in driverside footwell when raining or going through car wash
2. Very loud whining noise when cold starting, sounds like a supercharger, or, in this case probably a very tired PS pump.
3. Remote start randomly doesn't work and it applies to both fobs.
4. Front sensors always think there's something in front of the truck even if they're nice and clean and dry.
5. Shudders when downshifting from 4th to 3rd coming to a stop quite noticeably, with 3rd to 2nd also being present but less obvious.

Pretty disappointed since I traded in a 2014 with twice the miles for something newer and more reliable now that I have kids (aka no time to work on it myself as much as I enjoy it).

Anyways, enough rambling, will report back later!

 

[HSKR R/T]

Just an update on this - the truck is now at the dealer to get looked at. My last 1000km/600miles I have averaged 21L/100km, or 11.2mpg, which is almost exactly half the manufacturers rating for combined city/highway driving. Fortunately, the dealer themselves didn't hesitate to acknowledge that something must be wrong so they are gonna hopefully sort it out. The service advisors own 2500 cummins gets better combined mileage so it was pretty easy to convey the issue.

Along with the mpg issue, it's also in for the following(which is laughable since I only bought 3 weeks ago)

1. Puddles in driverside footwell when raining or going through car wash
2. Very loud whining noise when cold starting, sounds like a supercharger, or, in this case probably a very tired PS pump.
3. Remote start randomly doesn't work and it applies to both fobs.
4. Front sensors always think there's something in front of the truck even if they're nice and clean and dry.
5. Shudders when downshifting from 4th to 3rd coming to a stop quite noticeably, with 3rd to 2nd also being present but less obvious.

Pretty disappointed since I traded in a 2014 with twice the miles for something newer and more reliable now that I have kids (aka no time to work on it myself as much as I enjoy it).

Anyways, enough rambling, will report back later!

The whining could be the e-torque motor bearing. Which if that's the case, could explain the poor fuell mileage as the engine is working harder to turn the e-torque motor.

 

[Upupandaway]

The whining could be the e-torque motor bearing. Which if that's the case, could explain the poor fuell mileage as the engine is working harder to turn the e-torque motor.

oh good point, I'll throw that out there whenever they call. Thanks

 

[Upupandaway]

One more update, and in usual dealer fashion, when there's more than one problem, they take care of one and somehow just ignore the rest even when you give them a list via email, and then walk them through it in person. They said they flashed the ECU to fix the downshifting shudder and the front park sensor issue - we'll see if that's the case.

As for the mileage, they didn't have any answers so I clarified that while I expect a limited to do worse on winter gas in cold temps, I shouldn't be coming in near half the combined rating. Fortunately, with the first advisor I spoke to telling me their cummins got better mpg, it gives me a leg to stand on because to say this isn't an issue is to say that a 1500 should get worse MPG than a 2500. I did bring up the generator bearings and they said they'll check it out. Hopefully I'll have more to report back today.

 

[HSKR R/T]

One more update, and in usual dealer fashion, when there's more than one problem, they take care of one and somehow just ignore the rest even when you give them a list via email, and then walk them through it in person. They said they flashed the ECU to fix the downshifting shudder and the front park sensor issue - we'll see if that's the case.

As for the mileage, they didn't have any answers so I clarified that while I expect a limited to do worse on winter gas in cold temps, I shouldn't be coming in near half the combined rating. Fortunately, with the first advisor I spoke to telling me their cummins got better mpg, it gives me a leg to stand on because to say this isn't an issue is to say that a 1500 should get worse MPG than a 2500. I did bring up the generator bearings and they said they'll check it out. Hopefully I'll have more to report back today.

Have to make sure all the issues get put in the service ticket when you drop it off. The techs will only look at things on the ticket, otherwise they don't get paid for troubleshooting things they can't account their hours for in the system.

 

[BowDown]

Yep! That’s why I said I never take those numbers seriously since every truck varies, and then went on to say that I don’t believe a 30% difference is reasonable.

I know it’s a truck and not a car, hence my post not complaining about me not getting car mpg. My point was that getting 30% below their rating seems to be too far out from a slight variation between trims, add-ons, etc.


Does anyone have anything helpful to say on this? I’m not expecting car MPG, just trying to see how wide spread this issue is and if there is any recourse at the manufacturer/dealer for it.

It is what it is. Every one of these trucks get diffferent fuel economy numbers. Some good, some not so much. You ae in about the middle of reality, so good luck with improving it. It's a 6000lb brick, a truck, not an ecomomy car.

I disagree, I regularly achieve the claiming MPGs in my truck, its the driver or the drivers driving habits more than anything else. I'd bet that those that think they are driving conservatively really aren't.
Im averaging 17-17.5 in mixed driving right now and do this consistently tank after tank in the winter. When it warms up and the air is less dense, I can get 17.5-18 in mixed driving mainly city. On the highway, in the winter, I see 20-21 mpg at 72-73 mph, in the summer, I see 21-23 mpg at 73-75 mph. If I drop below 70 mph on the highway, my mpg tanks to the 17's, best mpg on the highway for me is around 1700 rpm in 8th gear. Best mpg in the city is around 45-50 mph in 7th gear, also 1600-1700 rpm. When I try to drive in that rpm range, i achieve the above stated mpg's easily.

 

[Upupandaway]

Have to make sure all the issues get put in the service ticket when you drop it off. The techs will only look at things on the ticket, otherwise they don't get paid for troubleshooting things they can't account their hours for in the system.

Totally agreed. In this case, it started with a call, and then followed up with an email in bullet point form(stuff in bold and/or underlined where important, really as clear as you could make it), then pulled out that exact list while the advisor rattled it all off back to me before leaving it with them. In their defense, 7 issues is a lot to be on top of

I disagree, I regularly achieve the claiming MPGs in my truck, its the driver or the drivers driving habits more than anything else. I'd bet that those that think they are driving conservatively really aren't.
Im averaging 17-17.5 in mixed driving right now and do this consistently tank after tank in the winter. When it warms up and the air is less dense, I can get 17.5-18 in mixed driving mainly city. On the highway, in the winter, I see 20-21 mpg at 72-73 mph, in the summer, I see 21-23 mpg at 73-75 mph. If I drop below 70 mph on the highway, my mpg tanks to the 17's, best mpg on the highway for me is around 1700 rpm in 8th gear. Best mpg in the city is around 45-50 mph in 7th gear, also 1600-1700 rpm. When I try to drive in that rpm range, i achieve the above stated mpg's easily.

Also agree with this. I'm sure there's plenty that think they drive slow but do not. When I'm doing 70mph on the highway on dead flat ground with no wind, I get 16mpg, and that's with cruise control on so it's not a matter of driver input in my case.

Btw, it looks like we have identically spec'd trucks aside from the colour, so that makes the 25% difference in highway cruising mpg all the more out of the ordinary.

 

[BowDown]

Totally agreed. In this case, it started with a call, and then followed up with an email in bullet point form(stuff in bold and/or underlined where important, really as clear as you could make it), then pulled out that exact list while the advisor rattled it all off back to me before leaving it with them. In their defense, 7 issues is a lot to be on top of


Also agree with this. I'm sure there's plenty that think they drive slow but do not. When I'm doing 70mph on the highway on dead flat ground with no wind, I get 16mpg, and that's with cruise control on so it's not a matter of driver input in my case.

Btw, it looks like we have identically spec'd trucks aside from the colour, so that makes the 25% difference in highway cruising mpg all the more out of the

My truck gets worse fuel mileage using cruise control. IMO, its too aggressive in trying to maintain speed going up hills or when you've had to slow down then resume the previous speed.

It accelerates like it's in a race after having slowed down, dropping gears and going 50-75% throttle to regain speed as fast as possible and that's not necessary. I can drive without cruise and hold speed without doing all that

 

[Upupandaway]

My truck gets worse fuel mileage using cruise control. IMO, its too aggressive in trying to maintain speed going up hills or when you've had to slow down then resume the previous speed.

It accelerates like it's in a race after having slowed down, dropping gears and going 50-75% throttle to regain speed as fast as possible and that's not necessary. I can drive without cruise and hold speed without doing all that

Ah, ya that makes sense! Honestly wouldn't mind some hills for scenic drives but where I am its all flats haha.

 

[Upupandaway]

UPDATE: Picked it up from the dealer tonight, they agreed that the mileage was outside the range of "acceptable" variances between trucks and couldn't pinpoint an issue so they did a full reset of the ECU. The only thing they could say is we'll have to wait and see, and report back. Very well!

As for the rest of my list, they solved 2 of 7 things so this isn't the end. That'll get to be a whole other thread

 

[Trooper4]

I disagree, I regularly achieve the claiming MPGs in my truck, its the driver or the drivers driving habits more than anything else. I'd bet that those that think they are driving conservatively really aren't.
Im averaging 17-17.5 in mixed driving right now and do this consistently tank after tank in the winter. When it warms up and the air is less dense, I can get 17.5-18 in mixed driving mainly city. On the highway, in the winter, I see 20-21 mpg at 72-73 mph, in the summer, I see 21-23 mpg at 73-75 mph. If I drop below 70 mph on the highway, my mpg tanks to the 17's, best mpg on the highway for me is around 1700 rpm in 8th gear. Best mpg in the city is around 45-50 mph in 7th gear, also 1600-1700 rpm. When I try to drive in that rpm range, i achieve the above stated mpg's easily.

Like I said, EVERY ONE of these trucks get different numbers. Anyone that thinks that these trucks, if driven by the same driver, in identical conditions on the same day, will get the same MPG is plain and simple wrong.
These are machines with a tremendous number of parts, electronic and mechanical, that are manufactured under varying condition from day to day, with other machines that have a wear cycle so need to have parts replaced or repaired, by humans that have differing levels of "give a $h!t", that are put in a box and sent to other humans with the same attitude, and assembled into differing levels of completeness, and sent on down the line with sometimes missing and or misaligned parts, or electronic part that may or may not be PERFECT or programed properly by software that may or may not work properly for the duration of the vehicles life, AND all or some of these components and assembly by countries that really don't like us or give a **** whether we have a nice day or not.
No two identically built and optioned vehicles, straight from the factory, if driven side by side, will get the same numbers. There are just too many variables in the vehicle parts and manufacturing, let alone the human, and importantly, environmental, conditions.
I am just tickled to death that you got one of the good ones. I was also lucky, but other are not so fortunate.
So, I respectfully disagree with you.

 

[theblet]

I just pulled a trencher on a trailer around going 65 mph and my instant was 17 to 19. Didn’t use tow haul mode either.