Miles per gallon, MPG, Mileage

[Harp-oh]

What is your ecodiesel MPG both in town and highway. I've never got more then 23.0 on my 2015.

 

[TC Diesel]

Driving Habits play a big roll in MPG, speeds above 70 MPH will drop the MPG 15-20%, What Gearing?

 

[-STIGLITZ-]

24ish in town. 28ish for extended highway driving.

EDIT: Not hand-calculated* No towing...

 

[boosti]

Best was 27 MPG before AEM software update. I was getting 24mpg after the update. On flat open highways the Ecodiesel was definitely much better than the 5.7 Hemi which I was getting about 20 mpg.

 

[Tcretro]

I just returned from a 2500 mile trip and at one point the computer showed 30.2, average for whole trip was 27.5. A 2018 Eco Diesel Laramie Edition. So far I'm very happy with truck, I have put on about 10000 myself, there was only 7000 when I bought it in January 2020. The only thing I don't care for is the U connect needs to have maps updated and the Car Play for my I phone quit working.

 

[CARTERSECODIESEL]

I was getting 600 miles to a tank before I lifted it now with the 6 inch lift and 35 inch tires I get around 500 miles to a tank

 

[timmytime]

31-33 mpg for most driving, 18 mpg towing my 6500 lbs farm tractor. I should note that I have a tune, and I don't think I have ever driven faster than 60 mph in the past year.

 

[boosti]

The best the computer said was 27 mpg on my 2015 Big Horn. After the AEM lucky to get 23 mpg. If I still own the truck after the AEM extended warranty is up. I may get it tuned. I hear people are getting better results.

 

[John Jensen]

City 18-19. Hiway 23-24 @ 65-70 mph, 20-21 @ 70+ mph

2016 Eco, ECU & TCU tuned, no air dam, leveled, 10 ply tires, always 600+ lbs load incl shell

 

[TC Diesel]

John, that's My 2015 Mileage OEM also, 1 time I drove from Mason City IA to ,Blaine MN and I hit 30.2 MPG driving 65mph, It was the only time I made 30 MPG in 4,25 Year of Ownership. I use to give the Oscar to the 3.0 for MPG, Not anymore the AEM has cost 1-2 MPG and 2019+ Gas engines/truck have improved 2-3 MPG from 2018- models.

 

[John Jensen]

TC,
I never gave mine a chance to get 30pg. I leveled it, etc right away, before I made any long highway runs.
Last week I de-tuned it and got the AEM latest flash. Truck runs great, no lag, etc. I won't have an after AEM mpg because I'm putting the tune back in as soon as that update arrives..

 

[1shadowsabre]

City 18-19. Hiway 23-24 @ 65-70 mph, 20-21 @ 70+ mph

2016 Eco, ECU & TCU tuned, no air dam, leveled, 10 ply tires, always 600+ lbs load incl shell

I am set up almost exactly the same including leveled and 10 ply tires but without the 600 lbs load.
City 20 to 22 (seems to like 21.5!) Hiway 24 to 26 @ 60 to 65 never really go 70 for any appreciable time

 

[TC Diesel]

65 Seems to be the sweet spot for 3.0 3.92, after that the MPG takes V. My driving city Mixed never reached 20MPG, it was as low as 17 in winter and 18-19.1 Summer. I always HC....

 

[CAVEMANN]

2017, 3.92 gears, stock, I have gotten 28.8, hand calculated, 67 MPH on reasonably level ground, with a little mix of city in that run, very little wind, apparently just about ideal conditions, normal is 21 to about 24, I find that the go pedal pressure has a lot to do with it.

 

[Ic_65]

What is your ecodiesel MPG both in town and highway. I've never got more then 23.0 on my 2015.

I have a 2016 and in town used to average 24-26 and the best i got on the interstate was 32.1.

I ALWAYS told the dealer NOT to do the emissions recall during any maintenance but after a fuel rail issue repair they did, now i can barely crack 26 on the interstate. So I'm wondering if they did it'd anyway and didn't update the online maintenance log.

 

[John Jensen]

You repair invoice should show any recall, emissions, safety, etc flashes

 

[Ic_65]

You repair invoice should show any recall, emissions, safety, etc flashes

I thought that too and it doesn't but my mileage went to crap right after the repair so I'm grasping for an explanation.

 

[TC Diesel]

IC-65 is that 2 x 4? CC,RC,EC,-SB,LB. If the dealer plugged into the OBD port my guess it was flashed, The Tech may have inadvertently flash the ECM/PCM, unlikely but possible.

 

[Ic_65]

IC-65 is that 2 x 4? CC,RC,EC,-SB,LB. If the dealer plugged into the OBD port my guess it was flashed, The Tech may have inadvertently flash the ECM/PCM, unlikely but possible.

It's a 2x4 Crew Cab. I'll have to figure out how to truly know. If they did update it, I'm going to extremely po'd.

Thanks

 

[TC Diesel]

The dealer on the AEM is required by Law to update the Vehicle, its been decided upon in Fed Court, they have to log in Dealer connect https://app.n.fcawitech.com/auth/login.html . (If they plug into the OBD) It will look like this.