Real World Diesel Mileage?
 

I am looking for mileage information on 2018 to new vehicles from actual owners 1 ton diesel pick ups from any of the big three manufactures Ford, Dodge and GM.
Are the number from the trip computer or odometer and fuel pump?
What mileage are you getting for daily driving like a mix of stop and go and some highway non towing?
What mileage are you getting towing between 7500-10000lbs?
Looking at upgrade to a 1 ton for towing a travel trailer, can't decide if I want gas or diesel and I can't afford to make the wrong choice first.
I know that diesel is what I want for towing but it if daily driving mileage is worst then gas then I have decisions to make.
I have a friend claiming 13L/100km but it is a older truck with the DPF stuff etc removed.

i haven't checked the mileage for a long time ( too depressing ) but if memory serves , my 6l gm gas gets about 18 mpg and my duramax about 22 mpg .both these trucks are old and dont have computers to read out mileage . these numbers are from keeping track of miles and fuel and doing the math .

a service on my gas truck is half the money of a service on the duramax .

Why don't you go check out fuelly.com
Much easier.

My new 2019 gmc crew cab dually duramax
Empty hiway 100-110km. 12.2-13.2 liters per 100km
Hauling 20000lbs
19-25 liters per 100km depends on hills and how fast you put your foot into it
Back and forth to work and some hiway and stop and go. 14.5 liters per 100km
Thats warm up and cool down. Run across town and such.
Avreges better than my 2016 dodge 3500 drw with cummins and a standard.
I am happy best truck i have owned
Winter time add 2 liters per hundred on average

My 2019 F350 Platinum is about the same. 11 liters per 100 km on a good day with the wind at the speed limit.

My deleted 6.7ltr Cummins dodge gets 11.5ltrs/100km empty (small lift and 37” tires) and 14-16ltrs/100km pulling 10,000lbs

My 2013 f350 is still all stock and I get average 14.5l/100 on a 12,000km oil change interval. It's my daily driver for around town, back and forth to work and out of town trips. When I towed my 28 foot bumper pull trailer on a Nunavut trip a few years ago, if I remember correctly, my mileage dropped to around 18l/100kms.

same
2012 F350 6.7 completely stock. I change oil at 8000 km. Oil is cheap.

I have a 6.0l chevy gas and it averages just under 20l/100 empty. It hovers in the 18-19 range. Towing a mid weight trailer it's probably 24. Feels sluggish pulling 6-7000 pounds off the stops though.

A buddy has a 2012 deleted and can pull 14000 lb trailer at 120 kph and still get 12 l/100.

2005 Ram 3500 no cat free flow exhaust. {350k}

9.2-9.4 L/100 km that's with 26570R17 stock tire size 70% highway no real change dragging a small single axle utility trailer 600 kilo.

In fall I swap tires to 35" mud tires Towing my lifted 26ft Toy Hauler 5000 kilo 16.0 L/100 head wind can add or trail wind can subtract 1 L/100 km. gets about the same at 40-60 kph pushing mud on soft roads in 4x4.

Best mileage I ever got was on a trip to the Knife averaged 8.5 L/100 km empty with deck covered and unable to go faster than 90 kph.

Not sure what I’m doing wrong to get the mileage I get
2011 6.7 f350. 29/100 pulling 40 foot 14000# toy hauler keeping up with traffic
14/100 at 110 cruse set. 35” bfg’s
Old trailer was a 30’ fifth wheel 9000#’s got around 25/100
I guess I could be the guy doing 90 ****ing everyone off and save a bit of fuel

I know my vehicle is not among the trucks listed but I'll throw in for anyone who might be interested. Thanks for making me crunch the numbers, I'd been meaning to get to that.

2018 Mercedes Sprinter 3500 4x4 (dually). 3.0 L diesel V6. 15.1L/100 km overall since about my 3rd fill when I started logging my fuel and mileage in my phone notes section. That's off the odometer and recorded L at my fuel stops. If I discover an additional jerry can of diesel in storage I might have to modify my math very slightly. For something 9'4" tall with a good load of tools and inventory I think that's reasonable for combined city & highway, it sure beats the pants off of my old gas Savana. It also has some winter idling, but nothing excessive. The thing has a factory diesel-fired coolant heater (an Eberspacher) so that had some fuel burn time in there as well.

A recent highway trip to Fairmont for a job with a jump down to Cranbrook for materials netted 13.46L/100 km average over the 947.9 km trip. Driving the speed limit or +5 km/h for the most part.

On a related note, does anyone have a good fuel logging app that they utilize? I'm aware of GasBuddy but haven't signed up yet. Looking for user feedback before entering all of my data.

If you just want fuel then Fillup is quick and easy, gives you fuel mileage at each fill pus aggregates etc. If I was using a logging app for a business vehicle I would look for one that also lets me record service costs, tires, insurance etc. If you check the App Store there are a couple of good ones. There are even a few that will automatically log your trips on top of gas and service costs.

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2017 Super Duty 6.7 around 21-22 mpg on the highway empty. 3 horse trailer drops to 17-18 mpg. Factory 180 litre tank with a range of around 1300klm.

My 2018 f350 power stroke gets about 15L/100 at 120 and 23-25L/100 toeing my 12,000lb fifth wheel.

Gas 6.2 f350 gets about 17L/100 on the highway and closer to 30L/100 toeing the fifth wheel.

Lifetime average is what really matters. One time doing 90 empty with the wind at your back doesn’t mean ****, my diesels always lifetime average 17-18L/100 and gas trucks are closer to 20. Gas is often cheaper per litre and maintenance is less than half the cost of the diesel.

Pulling is significantly better with the diesel, no shortage of power to get going ever and having an exhaust brake is very comfortable. The gas trucks will pull just at well when up to speed, just slower to get moving and no exhaust brake.

If your not planning to pull a lot of weight often then pick what you want, either will make you happy.

I learned the hard way with my dodge diesel that all the money you save in fuel can be gone in an instant with even small repairs to any modern diesel.

I have a 2017 Duramax 3500 srw. Recent trip to Regina from Smoky Lake, 10 kms over all the way, so pretty much 120. Truck averaged 12l/100 on the whole trip. Doing 100 it will be as low as 8.5-9 l/100 overall average since new it’s at 14l/100. Totally stock, 45000kms. If I was to do it again I’d get a Ford F-350 with a 6.2 litre gas motor.

Why gas? With the increased everyday mileage and especially when towing there is little difference. The cost you save on mileage is eaten up in maintenance.

So based on the number that some of you have provided it seems that even with increase cost of fuel to drive a diesel the everyday mileage that you are getting that is better then gas, offsets that cost.

But the mileage you are getting when towing, makes up the cost saving for the additional expense of diesel servicing.

So at the end of the year the cost of running a diesel truck compared to gas is about a cup of coffee a week.

It's the initial out lay of cash that is expensive, but does the vehicle hold the $10K difference then entire time. Example will a 8 year truck that is a diesel be worth $10K more then the Gas equivalent?

My 2011 Powerstroke, deleted, I averaged approx. 400 KM on 80 litre tank. My 2016 Duramax, deleted, I average 900 Km on 120 litre tank - been as high as 1000+ km. YMMV :).

(My 2013 Sequoia gets 450 km on 100 litre tank)

Of 3 Cummins diesels I have owned, best was the '93 5.9 5 speed manual with the 3.53 rear end.

Easy 8 - 9 L / 100 driven at speed limit empty. An Incredible truck that still runs today.

Next best is the '03 5.9 with the Standard, with 3.73 rear end. Typically under 10 L / 100 km driven at speed limit empty.

Current '07 6.7 L auto with deletes done, and usually 11 - 12 L / 100 km empty at highway speed.

What kills you is going to a 410 rear end or worse.

Drewski

I’ll give you my long term report. Aug 2010 I bought a new 2500 ram slt. I drove off the lot all in at $48,000 with a few add ons. Factory it saw 14.5-15 l/100km unloaded on the hwy and closer to 18-20 100/km in the city. Pulling my 14,000 lb fifth wheel it did about 25-28 l/100km.
After the warranty was gone I deleted it and saw 1100/1200 km/ tank hwy/city mixed driving. Towing the trailer I saw 16-18 l/100km.

This was pretty average unloaded and you can see from the trip and dte I haven’t gerrymandered the l/100km by resetting it and getting my picture. That was on winter fuel and more city then hwy but still an honest long term average.

https://uploads.tapatalk-cdn.com/201...dc22ec0768.jpg



I did all the maintenance myself. On warranty with emissions intact I did 5k km oil changes. I bought either delo or rotella oil on Kijiji in unopened buckets when I could find it for under $50/bucket. My filters were the best on the market for that engine “Donaldson blue” and $16. So an oil change was under $45 all up.
Post delete I ran bypass filtration as well and did oil samples. Oil changes were at 10k intervals even though I could of gone much, much further.

For the life of the truck I knew the fuel system was vulnerable so it had two additional fuel filters installed, a Baldwin water trap and a 2 micron Donaldson. To replace both cost me $29. I never had an issue with the fuel system.

The only two “issues” the truck had was a steering box and O2 sensor. Both were replaced under warranty.

I also put a steering box brace on the truck and it tightened the steering up like a imported SUV instead of the classic dodge wandering feel.

I didn’t have to do any other repairs and the truck drove great when I sold it.

I sold the truck two months ago for $27,000 and didn’t have to negotiate or deal with any chit kickers.

Through ownership the power and torque made towing a dream, getting up hills I didn’t have to worry about losing speed but I worried about the transmission. I always drove it like I owned it and respected the fact I could of damaged the transmission if I mistreated it. Comparing a diesel to a gas jobber isn’t logical if your towing. I don’t even like driving petrol when I’m not towing, I personally hate higher revving engines that I need to push at all to get performance from. I’ll take the deep, lazy torque curve of a diesel every day.

Just from mentioning the transmission it reminded me of this. I saw it in noosa the other day just before we went paddle boarding on the river.

https://uploads.tapatalk-cdn.com/201...2098821cfb.jpg

I had my diesel truck disappear one night, so I don't have current experience, but a few years ago, not considering maintenance, insurance, or towing, you would have had to drive something like 250,000 miles before the diesel option paid for itself. It's difficult to calculate exactly as fuel price changes weekly, most people know how much they'll be driving two years from now, or when they are going to sell the vehicle. Another thing that's almost impossible to calculate is maintenance. Diesel engines typically last longer, but when something does go, they are usually much more expensive to repair.

Typically got 20 or so mpg on the highway in my stock Duramax trucks. Much worse in the city. Never was that impressed with it honestly.

2016 F-350 6.7 diesel, average 14-15 L 100 km, highway 11- 12 L 100 km, pulling 15,000 lb 21-24 L 100 km. Truck is all factory.

Because I don’t tow enough to justify a diesel motor and because I need to keep
a second vehicle around for winter use. I work 13-14 hours a day and won’t leave a diesel parked and shut off that long in the winter.

No reason a Diesel won't work just fine like that. I never worried about my Diesels starting even in real cold weather but if you are concerned and it is really cold with no power just have a diesel powered heater put into the truck. Whole bunch cheaper than needing two trucks or leaving the truck running even 3 or 4 hours a day.

Ram 2500
 

I cost my Ram 2500 every year for taxes. 2016- $0.20/km, 2017-$0.30/km and last year went up to $0.40/km. (Replaced AC compressor and fuel pump).
My normal is 10-12 liters/100km (highway) on summer diesel with standard transmission and light foot.

2019 ram 3500 crew long box- 6 speed aisin and new 6.7 ho Cummins.
Did a rounder of about 800 km yesterday; average speed around 125.
11.9 averaged out.
Towed a 17k fifth wheel last week at 110- 18.6 average

Thanks for all the replies