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Dodge Ram Real World MPG Numbers



  • cobrazeracobrazera Posts: 352
    I figured since you had filled 91 times, compared manual calculations with the computer, and found they compared 11 times, were low 38 times and high 42 times, then the computer reading is pretty good on average....especially an extended average.
    It's also nearly impossible to get the tank " filled " exactly the same every time, so that could be cause for some of the inconsistency.
    I have to admit that I have never checked my odometer, I will do that the next time I'm on the freeway, although my tires and wheels are stock.
    Thanks for the informative post...Richard
  • dustykdustyk Posts: 2,926
    Hi Rich,

    Good point on the pump filling. I usually buy my gas at the same station and try to get the same pump and let the fill stop when the pump shuts off. This is the best way I know how to ensure some consistency. For practical reasons I can't always do that, of course.

    I was just studying my spread sheet and I think I'm noting a trend. It appears that the computer is closest to a straight calculation when I'm at or near one-half a tank. (My Ram has the 26 gallon tank.)

    I don't know about the average, but a lot of people I know take the computer as gospel. I haven't talked or met one person yet who's actually checked that hasn't found the computers to be less than accurate. According to a friend at work his Impala owners manual states a plus or minus of 15% accuracy.

    Best regards,
  • I just acquired a 2001 Dodge Laramie SLT RAM 3500 4x4 5.9L 6 Spd Man. Trans with 61k miles. The truck is very clean and fantastic condition. The only modifications that I can find is a K&N Airfilter in stock airbox, and an after market exhaust brake.

    Driving the truck around town the computer is showing about 13.4 - 14.5 average mpg. This weekend I am planning to travel to Houston to see how it does on the open highway.

    I am curious on what other folks have done to increase their avg mpg in similar sized trucks. I've heard stories of some guys getting 25 - 30+ mpg in similar year model trucks.

  • cobrazeracobrazera Posts: 352
    According to Road&Track magazine ( August 2011 ), auto mileage displays compute mileage using the vehicle speed sensor and fuel injector dwell time. To quote: " It's an elegantly simple system requiring no additional hardware and is quite accurate ".
    IMO, if there is a consistent error, in a particular vehicle, in the positive direction, then the manufacturer has fudged some constant in the calculations to appear as if the vehicle is getting better economy than it really is. However, due to the accuracy of the sensing devices used for the calculation, it doesn't make much sense that there could be a large error in the plus and minus direction.
  • tmaktmak Posts: 6
    Well here is my update as of 12 July 2011. My 2011 2500 Cummins now has 9025 miles on it, my fuel mileage has slowly increased to an average of 14.8 MPG. The highest was 15.2 MPG and my lowest was 14.3 MPG. The dealership found nothing wrong with the computer system in my truck. I am not so hard on the accelerator. when I see My fuel AVG consumption drop in my computer display, I take it that the regeneration is working so I will gear down and allow the RPMs to go high (2300+ RPMs) for several miles. after that I will go back to "D". Sometimes I see adifference immediately. My biggest payoff is though is the heat.. I am under the ompression that the Cummins loves the heat. If I let it idle for 5-10 minutes my MPG on the road is good, (high 15s) when I don't I am in in the low 14sor high 13's. this summer I have been letting the truck warm up for around 5 miniutes before driving, it reminds me of my old cars I had in the 70's.
  • steverstever Posts: 52,683
    A reporter wants to talk with people who expected to get better gas mileage in their relatively new vehicle. Please email by Tuesday, July 19, 2011 with your daytime contact information and a few words about your experience. Thank you.
  • KCRamKCRam Mt. Arlington NJPosts: 3,516
    30 mpg is highly unlikely in a 3500. The best tank I ever saw was 24.3 with my 1996 3500 Club Cab 4x4 dually, but that was with the more efficient mechanically-injected 12-valve engine and the automatic which has a notably taller overdrive than the New Venture manual trannies. I also had the cruise control set at 57 mph for that run.

    With a 2001 (EFI 24-valve HO, rated at 245/505), and if you have 3.54 axles, you can probably get an honest 22-24 mpg if you keep your right foot in check and keep the speed below 60 mph. A chip may get you a couple more if it's matched just right, and again, you keep the speed down (the Cummins diesel gets its best efficiency around 1600-1700 rpm).

    My 2005 3500 with the common-rail fuel system and 2004 emissions settings will get 21 only if I'm really careful... the standard 3.73 axle is part of the problem there.

    kcram - Pickups/Wagons/Vans+Minivans Host
  • I have 2011 Ram 1500 Big Horn RWD Quad Cab with the 5.7 Hemi and the 20 inch wheels. I have not averaged anything better then 12 mpg and that's an honest reading as I input my mileage and gas purchase on and keep records every time I fill. This really sucks because the only major difference between this and my 2005 Dodge Ram RWD Thunder Road truck that I traded for this truck is the gear ratio but I don't think it should go from getting 16 to 17 mpg on the average to at best 12 mpg and there is some highway mileage on both to consider so there is no difference there. The new RAM truck had a rating of 13 mpg city to 19 mpg hghwy. I do not understand why such the difference especially since this is a 6 year newer truck and the suspension system is supposed to be much lighter so that could only help. I have taken my new Ram to my dealership and they have run all the system checks and nothing comes up on it. I have even tried babying her and still not getting any difference either. If anyone could help with any suggestions please reply. I have contacted RAM and of course the response I get is basically sorry about my luck but to take it to the dealership to see what they can do... which I have already done and explained that to them. Even one of the service managers at the dealership said he has a 2009 Ram and is getting poor gas mileage as well but seemed to see a slight increase after the break in period but was not anywhere near my 2005 Ram's mileage.... NOT COOL especially when gas prices are as high as they are. There should be a warning of this on these trucks.... RAM do not mislead the customers because I will probably not be buying another Ram in my life if this is the way it's going to be..... so sorry about your luck RAM and I will spread the news!!!
  • cobrazeracobrazera Posts: 352
    edited August 2011
    I'm sorry to hear that you're disappointed with the mileage on your Ram. I have basically the same truck, but mine is an '09 4WD.
    Now that summer is here, I'm getting 16.5 to 17MPG in all around driving, and that's not BS. My driving is suburban/country and small town with very little city and very little freeway driving. I normally drive at the limit or 5 over and keep any freeway driving to less than 75MPH. I am very careful with the throttle, driving to maximize the " Fuel Saver " light staying lit, and coast up to stop signs and lights that are red. Coasting is a huge contributor to mileage - it helps recover the extra fuel used when accelerating. I also mix 87 and 93 octane gas to get 90 octane for the same price as 89. IMO, using the recommended 89+ octane will return a bit better mileage.
    I also shut the engine off if waiting awhile at a takeout window, etc. - unless the air needs to be running, of course.
    These things may require a change in driving habits and can be a pain in the rear at times, but are effective at saving money at the pump.
    I love my Ram, and I know it will return decent mileage with a little effort.
  • I purchased a 2011 2500 megacab laramie 4x2 3.73 rear-end high output approx; two months ago. MPG has been absymal. So far 2,600 miles, actual avg with gallons purchased 11.2. I would say 80% city 20% hwy. I've been very easy on the accelerator and not towing anything or carrying much weight. The truck seems to perform great and love everything about it but the mpg makes me sick. Apparently high output means low mpg.
  • I understand your point of babying my Ram to conserve the gas but considering my 2005 was getting better efficiency then the 2011 I am quite disappointed to say the least especially when they charge the prices they charge for these trucks which was right around $40,000 msrp for mine. I have went and watched the "ECO" light and stayed right around the speed limit and still have not seen over 14 mpg except when we took it on the highway over 600 miles and got 17.7 mpg at best even though the computer in the truck was saying I was getting around 20 mpg. So if I wanted to go slow I would have bought a smaller engine that just does not make any sense and I do not constantly get into the accelerator so to get an average of 12.8 mpg and I have about 4600 miles on my 2011 Ram 1500... that's just plain wrong! I do appreciate the input though but it just does not remedy the situation. :cry:
  • I recently bought a new 2011 2500 with the Cummins. I am getting about 13 to 14 in the city which to me isnt bad. I also just took a road trip and was getting about 18 to 19. I was impressed and found that the computer estimate was pretty accurate. I HAD an 2004 Avalacnhe with 411 gears and the gas mileage and even the pulling was horrifically bad. Im actually getting an overall better gas mileage now in the Dodge than I was in the Chevy...imagine that.
  • took my 2011 mega-cab cummins to dealer to check why milage was so low, found out it was continualy regen mode, now happy to report 14.8 city, and 18.6 hwy now up to 3700 miles.
  • mrhemi1mrhemi1 Posts: 1
    i dont understand why you people are even talking about mileage. If i wanted great mileage i wouldn't have bought a truck never mind the hemi. I bought it for a truck not a smart car. If you want good mileage buy a small car.
  • scurleywurleyscurleywurley Posts: 1
    edited April 2012
    Let's think things through. The reason a lot of people buy trucks, myself included, is that they're necessary tools for jobs that a Smart can't be used for. Almost every day, my truck is used to carry 4 or 5 big guys in the cab, at least 1,000 pounds of equipment (sometimes over 4,000!) in the bed, and to haul around a trailer with a couple of tons on it. It does all of this, day after day, mile after mile, without so much as a hiccup. I'd love to be able to do all of this with a 30+ MPG vehicle, but there isn't one available that meets my needs.

    Now, since we've established that a Smart just isn't a choice for some people, let's see why MPG in trucks matters- I'm looking for a truck and have the option of truck A that gets 13 MPG versus truck B that gets 17. The current price of diesel is $4/gal and I expect to drive 25k miles this year. Given this, truck A will cost me roughly $7,692 to operate for the year while truck B will cost $5,882. That's almost TWO GRAND saved in just one year because I didn't have the mindset of "pfft. It's a truck, mileage doesn't matter."
  • lawman1967lawman1967 Posts: 314
    Just ran my first tank of gas in my new Ram 1500 (Quadcab Express, 5.7L, 20", 3.92 LSD).

    Drove 402 miles and put in 22.84 gallons of mid grade for an average of 17.6 MPG. Of those 402 miles, 160 were suburban driving and 242 was freeway (between 70 and 75 MPH, a few passes at 80 MPH).

    The truck had only 32 miles on the odometer when I took delivery and that it was topped off (it took an additional 1.2 gallons before automatic shutoff of the pump) and then refilled at the end using the same pump, I believe it is a fairly accurate manual computation. The computer was very close at 17.7 MPG average.

    For a brand-new truck with no break-in, I consider that exceptional fuel economy. With any luck, it will pick up an additional 2 or 3 MPG as it breaks in.
  • rcnc1rcnc1 Posts: 1
    I haVe a 2004 quad cab hemi 20 in rims with 127k miles. I am pretty good with maintainece. Years ago I was getting 15 mph. Over the years it is now 11mph. I suspect the gas quality has gone down with ethanol. I currently use 92 oct or the truck runs poorly
  • jwjbsjwjbs Posts: 1
    I just purchased a used 2010 ram 2500 with diesel engine and it is making horrible fuel mileage compared to my 2008 I traded in. It is making between 10 to 15 compared to 17-21 of my old pickup. I'm curious about your vehicle being in the regen mode. is there a way to detect if this is happening without going to the dealer? I'm brining it in next week but curious how often this happens. I'm not happy with the fuel mileage.
  • I got so frustrated with the new dodge diesel I traded it in for a chevy 2500 6.0 gas. For some reason the new dodge diesel continued to suck fuel, so at least i'm only paying for reg unleaded and avg 12.8 city gas. hope your luck improves.
  • oldie53oldie53 Posts: 1
    getting about 10 mpg towing 8000lbs with 411 gears is this correct. or should i change gears . It as a tcs tranny . running some hills..
  • KCRamKCRam Mt. Arlington NJPosts: 3,516
    I owned a 1996 3500 club cab diesel 4x4 for 9 years. I had the 3.54 axles and had no plans on towing, so I got pretty good mileage with the 12 valve Cummins and the 47RE automatic (best tank 24.3 mpg). But it did go down over time, and by 2005, I was barely reaching 20 highway.

    With the 4.10 axles and towing 8000, plus the age of the truck/engine, 11 mpg is not unexpected for your truck. Unless you're well over 300,000 miles, you're not due for a major overhaul, so there's probably not much you can do to significantly raise your mileage.

    KCRam - Pickups/Wagons/Vans+Minivans Host
  • joillisjoillis Posts: 2
    Recently got back from a 700 mile trip from alabama to indiana. I was averaging 21.3 mpg at 55-56 mph. I was quit impressed needless to say. My city mileage is around 14 to 15, the trick is to keep your foot out of the pedal and keeping your rpms low is what I have found. I run around town at around 1100 to 1400 rpms and on the interstate i was running it at a constant 1900 rpms.
  • I have a 2004 Dodge Ram 2500 with the 5.9l diesel. I bought it in 2008 with only 20,000 miles on it. I have 112,000 lmile on it now. I consistantly get 19.5 in town. On the highway I get between 22.5mpg and 26mpg depending on wind and hills. When I pull my 7000lb travel trailer I get 11.5 mpg and that is from Kerrville, Texas to Abilene, Texas which is nothing but up and down hills. It holds steady speeds pulling the traler up and down the hills unlike a ford diesel I tried which was constantly shifting.
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