Dismal Fuel Economy

[Bricklayer14]

2023 bought in Nov 23 and have around 6,500 miles. Live in Cleveland area and most miles are a mix of highway and city. Averaging between 15.5-16 mpg. Recent trip to upper Michigan driving around 80 mph and averaged the same, 16mpg. Disappointed, thought it would be around 18 average and 20-22 on trips.

 

[zx12-iowa]

2023 bought in Nov 23 and have around 6,500 miles. Live in Cleveland area and most miles are a mix of highway and city. Averaging between 15.5-16 mpg. Recent trip to upper Michigan driving around 80 mph and averaged the same, 16mpg. Disappointed, thought it would be around 18 average and 20-22 on trips.

Drop it down to 75 and I bet you get a couple Mpg better. Mine gets 18-20 on hwy at 75-80. At 70 Im over 20.

 

[Thrush]

Jul 23 here. I get ~16.5 average in the city, and if I keep it at 70-75 on the highway (Vegas to San Diego and back), I've seen 19-20mpg overall for the trip.

If you're doing 80 or higher mph, you take a substantial hit to the mpg.

 

[crs2879]

2023 5.0 with just over 10K miles. Truck is showing lifetime MPG average at 16.3 MPG. I've seen it read between 20-21 MPG on longer stretches, 2 lane roads where speeds were below 70 but pretty much every tank has averaged between 16-17 in mixed driving.

 

[TexasTea]

Even stock wheels and tires?

Stock wheels and tires with 25k on them. Leveling kit.

 

[BillfLang]

I am surprised that my Tremor gets about the same or slightly worse mpg than my 2017 Raptor did. (about 15.2 with 4k miles on it)

Thats with the same daily drive and same gas.

Thought that the Tremor with smaller tires and lower HP would get better mpg.

It will get better , around 6000 when mine kicked in . 3.5

 

[df4801]

It did get better. But took about 15-20k miles. Now I get 16-17 unless I let my son drive it. Then for some strange reason the truck only gets 14 mpg!

 

[zx12-iowa]

I’m at 17k miles just did a highway trip at 75 mph and got 21 mpg. I’m 100% stock (except for tri fold bed cover).

 

[TexasTea]

2023 bought in Nov 23 and have around 6,500 miles. Live in Cleveland area and most miles are a mix of highway and city. Averaging between 15.5-16 mpg. Recent trip to upper Michigan driving around 80 mph and averaged the same, 16mpg. Disappointed, thought it would be around 18 average and 20-22 on trips.

1. 80 mph of COURSE you're gonna get crap mileage. Slow tf down. 65-70 the aero sweet spot on a big square truck.

2. I drive like a granny very literally and I get combined 15.6. Is a high performance truck with big tires (OEM size) and sits high in the wind.

Don't worry about it and enjoy the truck.

 

[DirtyBoots]

'24 5.0 I got about 16ish hwy until about 8-9K it went up a little now I'm at 12K and getting 19-20 hwy with the cruise on 75 on our last 1200 mile ride one way and back was the same running in "normal" mode. Did a "eco" mode on a different trip at 350 miles one way and back and was zero difference

 

[Rabidtastic]

Did 1200mi this week. Little under 19mpg avg with a sub optimal cruise speed. Could’ve got better with a lower cruise and/or using my foot more on the hills. I am somewhat impressed at how much the adaptive cruise lets downhills roll before dialing it back…the cop, not so much.

 

[PNWTremor]

'24 5.0 I got about 16ish hwy until about 8-9K it went up a little now I'm at 12K and getting 19-20 hwy with the cruise on 75 on our last 1200 mile ride one way and back was the same running in "normal" mode. Did a "eco" mode on a different trip at 350 miles one way and back and was zero difference

Eco Mode is a total scam. It just holds a higher gear longer and cuts throttle response by modifying your relative throttle position.

I’ve done an experiment on this and I actually got better fuel economy in Normal Mode. Why? Because you get up to speed quicker in normal mode. Eco mode takes longer to accelerate and you waste gas during that time.

I also learned that the stupid (and brilliant) adaptive transmission PCM doesn’t scale or learn with your drive modes individually. It affects your vehicle globally. Example: If you go from driving 500 miles in eco mode, driving like a grandma, it learns that. Then if you switch to sport mode and give it gas, you’re going to wonder where your power went.

TLDR; just keep it in normal mode. Best average fuel economy and you won’t be gear searching if you switch to another mode.

 

[WA Tremor]

31k miles on my '22 and my combined mileage is sitting at 16.7 right now. Cruise at 72 and i run about 20.5mpg on four to five hour road trips.

 

[TremorWorm]

My recently purchased 23' was getting bad fuel economy at first. Checked tire circumference in for Forscan and it was not set for stock size. Previous owner must've had larger tires. Speedo was off as well. Changed it and now getting 19-20 mixed highway/backroads driving.

 

[BuilderJeff]

A small sampling here. Truck had about 4900 miles on it and towing. 3500# camping trailer.

 

[PNWTremor]

A small sampling here. Truck had about 4900 miles on it and towing. 3500# camping trailer.

That’s a lot of coasting

 

[MASH]

At almost 4K, 17.8 for reference

I'm at 4k and overall average is 16.9 with 50/50 highway and city. One 1,500 mile trip driving 80-85. Otherwise I have stayed at 70mph on the highway. The last 1,300 miles I've averaged 17.7.

 

[MASH]

I failed to mention I noticed a drop when I installed the spray in bedliner and bed cover. The extra weight matters.

 

[PNWTremor]

I failed to mention I noticed a drop when I installed the spray in bedliner and bed cover. The extra weight matters.

Wait till you put bigger tires on

 

[BuilderJeff]

That’s a lot of coasting

Don’t you know it! All down hill from the Hole-In-The-Wall CG in Mojave Nat Preserve.