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  1. #1
    Site Sponsor
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    Question Actual 2020 Ford 6.7 Fuel mileage towing and solo - please post

    Please keep this thread on topic as I am hoping to gather information to help folks (and myself) choose between the 2020 6.7 new generation diesel and the new 7.3 gas Godzilla motor. The 7.3 thread has offered some excellent information.

    If you have a 2020 6.7 please report your fuel mileage towing, solo, and your rear end gearing. Please only 2020 Ford 6.7 diesels folks.

    Also report if there have been any issues with the 6.7 or the new 10 speed auto trans.

    If you had to choose again would you do anything different?

    Thanks in advance folks
    Keith
    2018 Reflection 150 Series 220RK 5th wheel with 6K axle upgrade. B&W 25K OEM Companion, Steadyfast system, 2022 F350 SRW 6.7 King Ranch 8' bed, Trailer reverse lights, rear spare tire holder, storage tube, sumo springs, Victron MultiPlus 12/120/3000, and Solar

  2. #2
    Seasoned Camper
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    I have a 2020 F350 Dually, Super Cab, 6.7 diesel, 10 speed transmission, 3:55 rear end.
    Just over 3,000 miles on truck
    1,125 miles towing, soon to be a lot more.

    Trailer
    2020 Reflection 337RLS
    Trailer weight about 13,000 pounds
    Pin weight about 3,000

    I have only done one short stretch of interstate while towing. 12.7 mpg.

    The normal roads I drive are bad to horrible two lane winding black top roads. Lots of slowing down and speeding up. These roads I get 10.5 to 11.5 mpg.

    Empty I get 16 to 20 mpg.

    If I find these numbers change I will try to post new numbers.

    I love the truck and it is a perfect match for the trailer. Compared to my 2012 F250 6.7, the 2020 is a beast. The 10 speed transmission is great and so far no problems with the truck.
    Last edited by Always Learning; 07-06-2020 at 08:40 AM.
    2020 Reflection 337RLS
    2020 F350 Dually

  3. #3
    Long Hauler bertschb's Avatar
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    Bend, OR and Palm Springs, CA
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    I have a 2020 F-350 6.7 with the Tremor package which comes with a 3.55 rear end. I've only towed about 1,900 miles so far towing my 2020 Solitude 310GK at about 14,800lbs. Mileage is around 11.5 towing. 21-22ish on the highway empty at 55-60 (Central Oregon has slow highway speeds).

    No problems with the engine or transmission - or anything else for that matter. I really like the 2020 Tremor and would buy the same truck again. I may actually keep this one for a while (I'm on my 3rd truck in 4 years).
    Last edited by bertschb; 07-05-2020 at 09:21 PM.
    Brian & Kellie
    2020 Solitude 310GK-R, FBP, 1,460w solar, 540ah BBGC3, MORryde IS w/disc brakes
    2020 F-350 Platinum SRW Powerstroke Tremor, 60g TF fuel tank, Hensley BD3-F air bag hitch

    Previous setups:
    2019 Solitude 373FB-R, 2019 F-350 Platinum DRW Powerstroke, Hensley BD5 air bag hitch
    2016 Reflection 318RST, 2016 GMC 3500 Denali SRW Duramax, Hensley BD3 air bag hitch

  4. #4
    New Member
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    My 2020 F450 gets about 8 mpg when towing my 398M (around 17-18k pounds).

  5. #5
    Big Traveler Txfivver's Avatar
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    2020 F450 here 4:30 gears. I've done highway trips without the trailer and at 70 mph it gets 18.5-19 mpg turning about 2100 rpm's. I've only towed the Solitude a couple hundred miles with it so far but started with full tank and zero'd mpg readout. At 60-63 mph it steadied out at 10 mpg. Solitude weighs 16600 per Cat Scale. No issues at all with the truck and wouldn't change a thing.....love it!
    2019 Solitude 375RES Onan 5500 Splendide W/D Samsung res. fridge
    2020 Ford F450 Platinum dually 6.7L 4:30 gears
    B&W Companion for Ford puck system 20K lbs
    Jeff

  6. #6
    Site Sponsor
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    Thanks for the great information folks. The new 6.7 is indeed impressive.
    Keith
    2018 Reflection 150 Series 220RK 5th wheel with 6K axle upgrade. B&W 25K OEM Companion, Steadyfast system, 2022 F350 SRW 6.7 King Ranch 8' bed, Trailer reverse lights, rear spare tire holder, storage tube, sumo springs, Victron MultiPlus 12/120/3000, and Solar

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