3.5 EB Real World MPG

[Scotty]

20.3 mph‘s with 3300 miles...a mixture of highway and in town driving with about 100 miles pulling a small trailer

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[Scotty]

Yeap

That’s the one option I wish my truck had the 36 gallon tank

 

[Hawkeye]

That’s the one option I wish my truck had the 36 gallon tank

Yea it was one of the top items I was looking for when I shopped around (Payload capacity was #1).

On Monday i'll be starting a trip from San Antonio to Mountain Home ID.
I'll have my Yamaha in the bed and pulling my ~8000lb Grand Designs TT.

 

[Stubblejumper]

I did a 600 mile trip , cruise at 75mph, average 23mpg. Supercrew 5.5, 3.55 axle, 20" wheels.

 

[powerlifter405]

When you are calculating your mileage and specifying "premium" or 87 vs 91 octane, is anyone noting the type of fuel?

Are you using any type of ethanol/blend or pure unleaded?
My Durango got 18mpg on regular unleaded and 14mpg on 10% ethanol blend. Same, road, same time of year, same driver. My Sub goes from 13-14 down to about 11-12 w/ enthanol.

 

[mustanga10]

I’m clearly doing something wrong. Even if I drive like a granny, I’m only getting 17.5mpg with 87 and close to 19.5 mpg on 93 octane by the computer. Unfortunately when I do the math at the pump it’s actually about 1 mpg less than that. I have just under 2k miles on the truck.

I have a similar spec'd truck, Max tow also. I am getting about the same results you are.

 

[tcp]

Over 6000 miles on mine. Overall average is 20mph, and that's with a 500 mile trip towing a 5000 travel trailer. I usually get about 21-22 miles per gallon on each tank mostly highways going 75-80 Not tracking fuel type but I mix it up from time to time.

 

[Rich1982]

When you are calculating your mileage and specifying "premium" or 87 vs 91 octane, is anyone noting the type of fuel?

Are you using any type of ethanol/blend or pure unleaded?
My Durango got 18mpg on regular unleaded and 14mpg on 10% ethanol blend. Same, road, same time of year, same driver. My Sub goes from 13-14 down to about 11-12 w/ enthanol.

I am using 91 with NO Ethanol - just Gasoline. 275/65r20 on stock wheels/suspension and and averaging ~ 22mpg with mixed city/hwy on last 2 tanks - it was ~ 21mpg on the tank prior that was 87 with 10% Ethanol

 

[Stubblejumper]

3000miles now, and just over 20 mpg average using 87 in my 3.5.

 

[chuckg57]

3000miles now, and just over 20 mpg average using 87 in my 3.5.

Is that 20mpg from the computer or hand calculated?

 

[Stubblejumper]

Is that 20mpg from the computer or hand calculated?

Both. I get the same numbers both ways. I live in a small city, so no rush hour traffic.

 

[gtotco]

Both. I get the same numbers both ways. I live in a small city, so no rush hour traffic.

Yeah in my experience the trip computer is generally pretty accurate for highway less so for stop and go. Mixed I usually come in about .5mpg short, all highway and I’m usually right on top of the computer.

 

[Rich1982]

I am using 91 with NO Ethanol - just Gasoline. 275/65r20 on stock wheels/suspension and and averaging ~ 22mpg with mixed city/hwy on last 2 tanks - it was ~ 21mpg on the tank prior that was 87 with 10% Ethanol

Also for the last 300miles i have turned off the traction control - seems to improve mpg to ~ 23.2mpg (only difference I have noticed is that when I let off the gas coming to a turn or stop with TC off the truck just coasts in current gear. With TC on it appears to immediately down shift 2-3 gears)

 

[Duckgumbeaux]

I admit, I accelerate more aggressive than I should. The highway mileage is what is most disappointing for me. Honestly thought getting 18-20 on the highway at 65mpg would be realistic.

I have 800 miles on my Platinum 3.5 Eco. I used ECO Mode on the highway for 40 miles and got 24.5 MPG. This truck is amazing

 

[James Dean]

My 2013 FX4 Gets in the 14's in the city and 19 on the Hi-way. 3.73 rear 6 speed trans.,

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