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Anyone towing with your expedition? If so what mode do you use, and what mileage are you getting? I have to say I’m disappointed in the fuel range while towing. At best I’m getting 130 miles on a tank, that’s if I refill with 25 miles left. I’m on the interstate mostly but it sucks.
2020 Expedition Platinum 4WD 3” Ready lift, Fuel 20” x 9” wheels 35” Terra Greppler G2 35”x12.5x20
While I agree that mileage is horrible, did you consider the mods you've made to the truck? You've lifted and added 35" tires. Did you get your speedo recalibrated? If not, your speed and mileage is off by about 7.5%. How fast are you towing? If you didn't recalibrate and your speedo says 70, you're actually going about 75. These Ecoboosts will tow at whatever speed you want, but they really spool up and suck the gas at higher speeds.
Well the 23 gallon tank is small but that is still putting you at 6mpg which is awful.
yeah it was 4.5 to 5 mpg most of the time.
It did get better in all wheel drive and with premium fuel. The 23 gallon tank is just stupid on fords part, especially on a vehicle with a towing package. I was traveling from north Texas to south east Alabama. I shouldn’t have to make the trip often with the expedition. I guess I’m more annoyed that just a trip to the beach pulling a jet boat is going to be a PIA.
Maybe I can find a tune and some upgrades that won’t void the warranty. I just get tired of stopping every hour for fuel.
There was only about 1000 to 1200lbs in the trailer. It’s a brand new vehicle, we bought it and the day after the wheels were put on it we went on our trip. It’s my wife’s car, I’m wanting to say is showing 15mpg avg now. I’m going to call Monday about getting the Speedo calibrated and see if i5-star tuning might be able to help with a tune.
There was only about 1000 to 1200lbs in the trailer. It’s a brand new vehicle, we bought it and the day after the wheels were put on it we went on our trip. It’s my wife’s car, I’m wanting to say is showing 15mpg avg now. I’m going to call Monday about getting the Speedo calibrated and see if i5-star tuning might be able to help with a tune.
I'm thinking the tires are too big as well. You know the calculation. Tire size increase means higher final drive gear ratio. By higher I mean a Lower number. Not sure what these come with. Guessing they are 3.73 with HD tow package? There's a site out there that allows you to add in the new tire size to figure out what your new final drive ratio is after tire change but I forgot the url. you may have to do a gear change if you want to run those tires and not be at full boost on you EB while towing. For comparison sake, the raptor runs a 4.10 gear. That should tell you something.
I'm thinking the tires are too big as well. You know the calculation. Tire size increase means higher final drive gear ratio. By higher I mean a Lower number. Not sure what these come with. Guessing they are 3.73 with HD tow package? There's a site out there that allows you to add in the new tire size to figure out what your new final drive ratio is after tire change but I forgot the url. you may have to do a gear change if you want to run those tires and not be at full boost on you EB while towing. For comparison sake, the raptor runs a 4.10 gear. That should tell you something.
To clarify, is this does not have the HD trailer two, then it probably has 3.31 rear axle which means it can't get out of it's own way without your foot tot he floor while towing.
My 2015 EL 4x4 with the max tow with 3.73s averages around 16-18mpg empty. Towing our 5000# tritoon 65-70mph that pushes a lot of wind I get around 8mpg if I slow it down to 55pmh it'll get 10-11. So add you 35" tires, and what speed are you towing? I'd expect you to be down in the single digits, but all of this is just a guess until you can get some accurate odometer numbers.
Frontal Area (big trailer) = more wind resistance
Increased Rolling resistance from those tires.
Increased rolling resistance due to the added weight.
Increased drag from the lift (more air under the truck, more drag due to the undersides having the aerodynamic profile of a barn door)
Probably going faster than you thought (power required to overcome drag is cubic.. v^3 adds up quick!)
Diesel engines only get better fuel mileage because diesel engines are marginally more efficient than gas (less fuel goes into wasted heat) and diesel has more energy per unit volume.
