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Old 01-17-2021, 03:19 PM   #43
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18 mpg

Have a ‘19 Mercedes diesel Navion, 11,000 lbs. We’ve put only 6000 miles on it because of Covid. BUT, it’s a steady 18 mpg and I can actually accelerate and pass V10s going uphill. Couldn’t get that mileage or pass uphill in my 2018 V10 Thor. Yes, diesel is more expensive than gas here in NH but in past trips out west, the price difference between the two was negligible. We’re definitely happier in the diesel.
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Old 01-17-2021, 03:43 PM   #44
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Quote:
Originally Posted by BlueGekko View Post
Have a ‘19 Mercedes diesel Navion, 11,000 lbs. We’ve put only 6000 miles on it because of Covid. BUT, it’s a steady 18 mpg and I can actually accelerate and pass V10s going uphill. Couldn’t get that mileage or pass uphill in my 2018 V10 Thor. Yes, diesel is more expensive than gas here in NH but in past trips out west, the price difference between the two was negligible. We’re definitely happier in the diesel.
You pay a $30,000 premium for that diesel RV.

You need to drive a lot of miles to make up the difference in better MPGs.
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Old 01-17-2021, 03:47 PM   #45
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12-13 mpg with our MB diesel.
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Old 01-17-2021, 04:01 PM   #46
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Can anyone with the Ford Transit chassis provide input on their mileage, I am thinking of buying a class c or b with it
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Old 01-17-2021, 05:35 PM   #47
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Moving to class c

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Originally Posted by jackreno View Post
I am thinking of buying a 2021 BT Cruiser with the new Ford V-8 7.3, was wonder what are you guys getting with a Class C with the V-10, if there is someone with the new V-8 would like to hear from them as well.

My class A gets 7 mpg on a good day, want better MPG but don't want to sacrifice hp/torque..

Selling my class A and moving down into a class C-/B+
. I would go bc e that move serious cons of deration. I miss the room of the A
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Old 01-17-2021, 05:36 PM   #48
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My 26’ “A” with Mercedes V6 Turbo diesel gets 16 to 18mpg with plenty power. Towing drops it 1.5 to 2 mph. The above is cruising 65 to 68 mph. If we are in a rush and cruise 75-80mph we drop to 14-15mpg. We LOVE our Winnebago Via.
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Old 01-17-2021, 05:49 PM   #49
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Out on the highways of the southwest, we're getting anywhere from 7.8 to 9.5 MPG in our 2006 Lazy Daze 24' with the Ford E-450 V-10 engine.... about the same as we got with our Foretravel with a Cummins 450hp diesel.

We downsized from our 36' Foretravel in order to take advantage of remote boondocking (we're no longer full-timing). The LD's got great off-road clearance and loaded with solar as we have it, able to stay way-the-heck out for 7 to 10 days at a time.

Sure do love our Lazy Daze!
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Old 01-17-2021, 07:39 PM   #50
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Originally Posted by yeloduster View Post
Class A motorhomes have 10-15% larger frontal area than Class C motorhomes. Gas usage is more about pushing the air aside than it is about the engine doing the pushing.

Assuming a Class A at 60 MPH versus a Class C at 60 MPH the Class C needs 10-15% less energy. Class A's typically get ≈7 MPG and Class C's typically get
8 MPG. Some drivers claim better, some claim worse.

Class C diesel drivers claim better mileage.
I drive ltv unity b+ on sprinter chassis 18 miles per gallon at 60 mile speed 16 miles at70 speed and easy to handle like driving a van
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Old 01-17-2021, 07:49 PM   #51
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We had a 31' Itasca with a V-10 and got between 8-9 mpg depending on whether we were driving 65 or 75 on the highway.
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Old 01-17-2021, 08:48 PM   #52
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MPG comparisons between diesel and gas powered RVs make little sense ... because diesel costs more per gallon.

The comparison that makes sense between the two is Miles Per Dollar. Then ... they compare much closer.

BTW, comparing "who passes who" between a diesel and a gasser when traveling uphill in an RV must of course be a comparison between RVs of approximately of same size/weight. Our 24 ft. Class C powered by it's V10 in an E450 chassis - with it's more aggressive rear differential gearing (as opposed to an E350's differential gearing) - does not get passed by other RVs when going up hills (unless I let them - teehee).
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Old 01-17-2021, 10:41 PM   #53
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Expect 6-7, then if you get better, consider it a gift?
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Old 01-18-2021, 01:49 AM   #54
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How many miles do you travel annually?

We are in the slow lane, puttering along at 52mph.
We rarely get better than 14mpg.
But!
Our mpg is irrelevant to us because we rarely travel more than a thousand miles annually.
Fifty gallons a year is pocket-change daily.
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Old 01-18-2021, 04:35 AM   #55
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...

With a 30+ foot Class C, we get about 9 mpg on flat highway at 65 mph, no wind. The F-450 chassis has a V10, 6-speed, 4:56 gears & 7500# tow rating. It pulls most interstate hills in 6th and seldom shifts down below 5th on any road. We haven't towed.

This Class C mileage is a bit better than our previous 30' TT that we pulled using our Excursion with a new V10 in it. That combo got about 8.5 mpg at 65 on a good day and, with 3:73 gears, shifted the old 4L100 4-speed much more often, down to 3rd.

The biggest satisfaction difference... the TT had twice the storage space as the Class C, but the C is handier and rides better.

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Old 01-18-2021, 05:39 AM   #56
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27' coachman(2003) ford v10

ac on 65mph - 9 mpg+
ac off 55mph - 11 mpg-
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