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Mpls. MN

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Posted: 09/19/21 07:50pm Link  |  Quote  |  Print  |  Notify Moderator

I have the CDL in the family, I do most/all of the driving. We had a 04 32' v10 with the 4 speed, never towed anything, its our weekend get out of town vehicle.
It depends on the conditions, the F53 chassis is often all over the road with a good wind, with hills the v10 is screaming as it drops gears for more power, even in the tow haul mode. After adding $4000 in "handling improvements" we were able to do the speed limit most of the time, though it was still a white knuckle experience. We saw low of 4.5 mpg with a 25 mph head wind to 8 mpg on a near perfect day with few hills. If we ran the genny for A/C on those 85 degree days our mpg dropped .5 miles per gallon so from 7 to 6.5.
The upside was the v10 always started, got us to where we needed, and was cheap to maintain, absolutely no issues.
However, for work I drive diesels, so we traded the 2014 V10 in for a 2007 40' with the small but mighty 5.9 Cummins diesel, no more white knuckle driving, and we see 8 to 10 mpg.
There's no perfect motorhome out there, just figure out what you and family need to be happy, and then enjoy it.
My truck only gets 13 mpg, it has no queen bed, shower, bath, refrigerator, stove, tv, recliners or couch. Put it in perspective, basically you're driving a house. You want mpg's you drive a tiny little car, that is only for driving not living in.
Have fun in your search for your home on wheels.


Rescue, Ca

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Posted: 09/19/21 08:19pm Link  |  Quote  |  Print  |  Notify Moderator

If you have to ask.......


Washington State

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Posted: 09/20/21 01:57am Link  |  Quote  |  Print  |  Notify Moderator

wjschill wrote:

OK friends.

I've read fuel mileage for a 35' gasser with the v-10 Ford engine pulling a 3500 lbs toad will be anywhere from 4 to 9 mpg. This is average traveling, not all level and not all hills.

Please share your experiences.

My 28' Class C (E-450 chassis with the Triton V-10) gets around 8.5mpg. I've only towed with it once, it was a small car around 3000 lbs and it didn't affect mileage much, it was still above 8mpg. This was almost all at freeway speeds so most of the power goes to fighting air resistance, so the extra weight didn't make much difference.

dodge guy

Bartlett IL

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Posted: 09/20/21 04:57am Link  |  Quote  |  Print  |  Notify Moderator

dodge guy wrote:

My average for our 12 with the 5 speed auto towing a 4500lb Explorer and running the generator is 5.8. I don’t figure mountain mileage as it’s only for short times.

Sorry, that should’ve been 6.8.

Wife Kim
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Billings, MT

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Posted: 09/20/21 06:16am Link  |  Quote  |  Print  |  Notify Moderator

wildtoad wrote:

So if you collect all this data and don’t compute your mileage, why collect it? My DW always gets a receipt at each fill up and stuffs it in the glove box but never does anything with them.

I do agree with your sentiment.

And now to answer the OP’s post, after some 29k miles towing/not towing, my average is high sixes to mid sevens. (2016, Newmar BSS, 31ft, Ford V10)

mowermech wrote:

I drive the Ford V-10 motorhome shown in my sig, towing the Jeep shown in my sig.
I keep a log book where I enter every gallon of gas that is put in the tank, what date I bought it, how much it cost, and the odometer reading.
I have never computed the MPG, because I just don't care! I know it is terrible, and I know it is to be expected. Worrying about fuel economy in a motorhome is an exercise in futility. It is terrible, and there is very little that can be done to improve it!

Why collect the data? It is something that I have done since my first vehicle along about 1958. It is a habit I am slowly breaking. The only vehicles I still do it in are the Dodge truck and the motorhome. Perhaps someday I will throw those two logbooks away. Of course, they are also a log of where we have been. Or, perhaps, someday I will do some math computations and see what the fuel economy was.
Just a bad habit that I haven't managed to totally break yet.

2010 North Trail 28BHS TT
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Toy: '05 Wrangler Unlimited
Towing: 1999 Dodge QC LWB, Cummins, Auto, 4X4
Other toys: 2 Kawasaki Brute Force 750 ATVs.
"When seconds count, help is only minutes away!"


Southeast Louisiana

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Posted: 09/20/21 06:23am Link  |  Quote  |  Print  |  Notify Moderator

Fuel mileage was never as much a concern as was range. I like to know how far can I go with what it's in my tank and where to fillup.
But for those who care I've averaged 8mpg in both my 45' Newell and 36' Foretravel. That's driving 62 mph.



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Posted: 09/20/21 07:21am Link  |  Quote  |  Print  |  Notify Moderator

My Monaco with a 8.3 Cummins averaged 9.5 round trip to West Palm beach and back towing a car on a Featherlite trailer. I drive around 65 most of the time.


St. Augustine Beach, FL

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Posted: 09/20/21 07:32am Link  |  Quote  |  Print  |  Notify Moderator

enblethen wrote:

The faster you travel the faster the gas disappears!
Keeping speed 55 to 60 will help!
We have big block Chev chassis and get 8+. Fords do not get good mileage.

And please remember, if you DO subscribe to the "55-60' philosophy, please do so on US highways and not on 70-75 mph interstates.

We just returned from a 3300-mile trip, and actually witnessed 3 cases where a pokey driver nearly caused an accident. 2 were RV's and one was a pickup.

Safe travels.

. . . never confuse education with intelligence, nor motion with progress


Dixie --- N. Georgia

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Posted: 09/20/21 08:02am Link  |  Quote  |  Print  |  Notify Moderator

Chances are if you start driving by your wallet, your trips will become worry and not be any fun. Keep the accelerator off the floorboard and drive off the top half of your tank. We have the Ford F53 chassis an tow a 4 door Jeep. Not nearly the towing power the previous 425 hp Cummins had, but it gets the job done.



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Posted: 09/20/21 08:21am Link  |  Quote  |  Print  |  Notify Moderator

OP here.

Thanks for all the input. I don't worry about the $$$'s, but the rig I'm looking at buying has a 75 gallon tank.

I was just trying to figure out about how far I can get on each tank full.

Thanks again...


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