I know SDs don't get good gas mileage, my 2017 F350CC FX4 6.2 with 4.30 gets 12.5 mpg. Looking at getting a 2022 or 2023 F250CC 4X4 with 3.55. Does the 7.3 or 6.2 get better MPG?

 

Since gas prices have gone way up, I have been watching my gas mileage closely. I have a 2022 6.2L, 3.73 and have been averaging around 15mpg, half highway around 50mph round trip to work and back....and short runs for some errands when I off...

 

I get 13.3 at 80 mph with a 7.3 with 4.30's.
I get 15.8 at 55 mph.

So, yes it does.

 

Based on most of the info I have seen, the 7.3 or 6.2 and different gear ratios don't really make much difference. Maybe 1 mpg or so if that means something to you.

 

The 10spd transmission behind the 7.3L and the 6.2L (F350 only) gets the better fuel economy. The F250 6spd 6.2L lags behind in mpg compared to the 10spd.

That being said the little bit of unloaded mileage ive traveled with any of the SuperDuty 6.2L trucks usually averages 13mpg mixed and 15mpg highway.

 

The 7.3 is going to get pretty close to the same fuel economy as the 6.2, due to the newer design for better efficiency, that is if both are equipped with the same trans and axle ratios and tire size.
The bonus is the higher power and torque of the 7.3, but it also costs more to begin with.

 

My '22 7.3 10 speed gets 2-3 mpg average better than my '12 6.2 6 speed truck did under the same driving conditions.

 

My 21 7.3 gets equal or slightly better than my 12 6.2.

 

My last 3 Fords were all Crewcab Short bed XL 4x4 running the 285/70/17 tires:
2016 6.2 3.73
2017 6.2 4.30
2020 7.3 3.55

My 2017 averaged a full mpg better than my 2016. My 2020 7.3 averaged 1-2 mpg better than my 2017, had a solid 12 average around town for work, and could easily hand calculate 15-16 on road trips.
If you look through the 6.2 and 7.3 sub forums there is more info down there for each motor.

I'm not sure if Ford fixed the major dead pedal some of us had with the 7.3/3.55 combo but mine was so bad I traded it in. Based on my experience I would be wary of that combo again. I actually almost ordered a new 6.2 F250 with the 6spd and 3.73 gears but the Ford orders are so crazy right now I picked up an F150 off the lot. It's nuts Ford still won't give you the 3.73/F250/7.3 combo because that would be my choice.

 

1 MPG may not sound like much, but it's 10% if you are getting 10 MPG and 6.6% if you are getting 15 MPG... I would be, am able to go 48 miles farther per tank with my truck, as, I did increase my trucks MPG by 1 Mile + Per Gallon. What that means is every eleventh tank is FREE!!! and I just saved $319.00...

 

What is the dead pedal issue?

 

Bought my 2022 F250 6.7 in Utah and drove it back to Oregon (the 2007 died there) On the road I-80 it got really good MPG. It does have 3.31 gearing. On a trip to So. Cal. 2 weeks ago I was getting just a tad over 20MPG. Around the city I get around 14. I don't drive over 70 mph and when going up a steep grade I take cruise off and keep the boost down using the throttle pedal watching the gauge and trans gear. Thats a method I used on the 2007 6.0 when I kept getting over boost alerts. Now I'm really satisfied with the match od 6.7 and the 10 spd.
Richard >>> FERdter

 

Yea, everything Ive been reading has the 10 spd being a major advantage.
Im a low rear gear kind of guy and the extra gearing and double OD allow 4.30 rears to turn low rpm at highway speeds.
My 2019 6.2 /4.30s Gets 14s on summer fuel in NJ. The winter garbage combined with extra warm up time drops that into the upper 12s.
I get my best mpg on county roads running 50 to 60 with light traffic.
Highway in jersey is a mix of too much throttle and too much brake while navigating passive aggressive JOs.
I reset my lieometer a lot to look at different averages. I can show solid 15+ on the county and back roads.
That drops to below 14 very quickly on the highway pushing through the wind and a normal 30 mile blast in traffic is in the 12s.
The truck is 90% DD with towing and hauling being well below max spec. But towing in the 9,000 range under the right conditions delivers better mpg than commuting on the highway.
If I was ordering new right now it would be 7.3/4.30. Dispite the fact I love my 6.2 and its been great for 3 years.
I think the 10 speed in a Superduty made the 6.2 obsolete. Unless anyone is getting solid 16s or better with 6.2 10 speed trucks, but I havnt heard of that.

 

You have highways full of passive aggressive Junior Officers in New Jersey?

Yikes.

 

Same engine and gears here and I got 18.3 with the cruise set at 65 MPH on a highway trip last Monday. (207MI/11.3G) The dash MPG was 15.3MPH so don’t believe the dash display. I have never seen a dash monitor so far off.😳

They only reason I hand calculated it was that the numbers didn’t make sense when I filled it up after the trip. I can’t complain about that mileage.

To be fair though I am a pretty mellow driver and I am pretty easy on the pedals. I learned early on how expensive it gets when you drive your vehicle hard. My first couple of vehicles had a pretty hard life.😆😆😆

Bob