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Old 02-17-2015, 05:20 PM   #15
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...and downhill
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Old 02-17-2015, 06:42 PM   #16
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My last tank got 12 mpg B5.9 6speed Allison 32' Monaco Dynasty no toad at 65mph..
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Old 02-17-2015, 06:56 PM   #17
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8 does seem a bit low for a Vesta. Folks seem to forget it was actually designed in a wind tunnel (never found any published numbers though). While I think the 14 MPG claim was a bit much, 11 or 12 is possible.

The Wynns had a Vesta for a few years. They averaged close to 12. You can find details logs in their blog:

http://www.gonewiththewynns.com/vesta-fuel-economy

I'd be checking into that intermitent check engine light, that shouldn't be happening, and may clue you into a real problem.
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Old 02-17-2015, 10:20 PM   #18
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Originally Posted by CampingCajun View Post
Even under optimal conditions with everything right it is still a large brick on wheels.
Yep, still pushing an 8'X12' wall through the air. It's akin to walking while carrying a piece of plywood in a 10mph breeze.
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Old 02-17-2015, 10:33 PM   #19
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What does the mfg say about it? That is a big difference
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Old 02-17-2015, 11:00 PM   #20
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Poor MPG

Lancy.... It's all about the power to weight ratio. If you've got a pretty standard powertrain setup, and you're moving a Class A that weighs about 100 lbs per hp, you'll get around 8mpg. Plus or minus, give or take. I'm moving 106 lbs/hp, and I get a bit under 8.
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Old 02-18-2015, 07:32 AM   #21
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Wow, that's the first time I've seen the mpg formula. (weight/horsepower=mileage) Works out darn close on ours as well.
-Al
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Old 02-18-2015, 07:38 AM   #22
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Wow, that's the first time I've seen the mpg formula. (weight/horsepower=mileage) Works out darn close on ours as well.
-Al

I can't make it work.

Weight is 40000
Hp is 500
According to your formula I should be getting close to 80 mpg.

Did you leave out a step?



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Old 02-18-2015, 10:11 AM   #23
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Re-Read the formula. You need to divide your weight by 100. Your example would put you at 8 mpg.
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Old 02-18-2015, 08:01 PM   #24
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I have not yet had a chance to check the mileage, but with my old rig towing my enclosed car hauler, my mileage would depend on a few things, If its flat the cruise control seamed to get the best MPG but if there were lots of hills, i could do better by driving manual speeding up and taking advantage of the downhills and letting it run up the up side hills without pushing as hard. Basically using gravity.

My problem is the lead foot so I am sure i will pay for it in gas consumption.
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Old 02-18-2015, 08:08 PM   #25
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Wow, you people are making me feel very special! I'm getting 9.5 to 10 mostly pulling the toad and that's an average over the last 45,000 miles. I'm running a Cummins 340, 35' coach and grossing about 28K.
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Old 02-18-2015, 09:00 PM   #26
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Do what the lady did to Honda. She estimated how much money she lost between the gas mileage she got and the advertised mileage and then took Honda to small claims and won. Now it was later overturned because attorneys got involved (shouldn't have been allowed in a small claims decision) but, it did get the attention of manufacturers advertising false mileage claims.


Give it a try, Navistar won't show up.
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Old 02-18-2015, 09:06 PM   #27
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I have a sneaky feeling the mileage factors come from the manufacture of the vehicle/chassis, not the coach manufacture. The box adds a lot of weight and wind resistance.
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Old 02-19-2015, 10:51 AM   #28
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I have a sneaky feeling the mileage factors come from the manufacture of the vehicle/chassis, not the coach manufacture. The box adds a lot of weight and wind resistance.
That would look awful funny going down the road...
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