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Old 11-18-2011, 12:32 PM   #29
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I was curious as to the actual mpg of my RV so put the miles driven and gallons into a spreadsheet. I have driven this one 32570 miles and put 4158.5 gallons of diesel into the tank. That averages out to 7.83 mpg. This includes trips around the US and mostly towing the CRV. Many of the trips are across the Siskiyous in southern Oregon and it takes a lot of power to cross those hills. I think if I had the same number of miles and lived in less mountainess country the mileage would significantly improve. I do use the dash air and/or diesel generator running when it is hot outside. Most of the highway speed is at 58 to 62 mph. I did not take the time to figure out and subtract generator hours for a better highway fuel consumption. Lowest I recorded is 5.9 and highest was 12.4 mpg???
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SW OREGON 2004 Journey 39K, 330 Cat
If towing: a 2006 Mini Cooper or 2015 RAM Limited 4X4
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Old 11-18-2011, 12:45 PM   #30
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I talked it my previous post about my 6.2 MPG average. What was interesting while crossing Louisiana from Vicksburg to Monroe it is real flat after you cross the Mississippi River. I let my Signature shift into sixth gear and then slow it down to 55 MPH and with no wind blowing on a flat road with no passing or speed changing I could get a straight 8.0 mpg over 100 mile stretch. I drive this section a lot so I have verified no wind and done it again at 60 mph then 65 mph. It is real obvious that for every 1.0 MPH increase I loose 0.1 MPG. The intent was to see how it is if I never had to climb a hill, or accelarate onto the road or have a headwind and understand where my MPG was going. The big thing is I can't drive 55 mph but driving like this for 100 mph at 62 mph I can get around 7.2 to 7.3 mpg. So I lose most of my MPG accelerating onto the road or climbing or from headwinds. It always seems like I have a headwind.

Mike Canter
"Gunner" USN Retired, Airdale
2004 Monaco Signature 44' Conquest. Detroit 60
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Old 11-18-2011, 01:25 PM   #31
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Thanks Mike. We had 60 series Detroits in the all-terrain forklifts we worked on in the Army. Great power plant, but you gotta maintain them.

wife, 3 Scotties and an African Gray parrot - and they all terrorize me!

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Old 11-18-2011, 02:04 PM   #32
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We have a 37' 2011 Challenger with the Ford V-10 and tow a Jeep Wrangler. Average mileage is 7.8 after 10,000 miles. It will do better if I keep the speed under 70mph on the Interstates.

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Old 11-18-2011, 02:24 PM   #33
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I have a 2010 Tiffin Red with isb engine (pre DEF)
I tow a mini van 4700+/- lbs I am just a little shy of the 33000 gcwr

MY Red read out is always 0.5 mpg above my actual calculated mpg so I do not think people can believe whatever the coach reads

9000+ mile trip fl to west coast etc. I average 8.9 mpg after accounting for generator hours. If I am in the Rockies it is too depressing to even calculate. If I stay in FL I can get numbers that make me smile.

I am hoping for another trip to the Rockies next year and lousy mpg.
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Old 11-18-2011, 02:31 PM   #34
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The only thing I can say for sure is I average about 3/4 tank between fill ups
John & Cathy R.
06 Pace Arrow 38L W24
08 14 Lincoln MKX AWD
See My RV Upgrades
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Old 11-18-2011, 02:37 PM   #35
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Say What?

wife, 3 Scotties and an African Gray parrot - and they all terrorize me!

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Old 11-18-2011, 05:34 PM   #36
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2007 Damon Challenger 37'10" 22k f53 chassis V-10
Round trip from SC to Yellowstone and back via Blackhills and Grand Canyon
averaged 8.2 mpg towing a Ford Escape and tried my best to keep the speed between 60-63.
Richard & Sheila

Neko & Nilla
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Old 11-18-2011, 06:11 PM   #37
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2000 class A with Chevy 454, Hydromatic transmission, and 13,500 lb (lightly loaded) = 9.25 MPG at 65 MPH. This measurement was on 3 tanks of gas (1400 miles), on mostly flat land (Virginia, North and South Carolina), in cool fall weather, and not towing.
Tom and Amy from Northern Virginia.
2000 Allegro 454/Workhorse P32/TST/Crossfire
Life is a DIY project - enjoy it.
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Old 11-18-2011, 06:18 PM   #38
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I get 8 mpg on my 05 Safari Cheetah with a CAT 350 while towing a CRV. The CRV gets about 1000 mpg.
Bev & Dick and Fuzzy the cat
2005 Safari Cheetah 38
2009 Honda CRV dinghy
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Old 11-18-2011, 06:54 PM   #39
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New signiture coach gets 7.75 towing my jeep. Hopefully it will get better when it breaks in. I am running synthetic 5w 20w. Five star tune for performance.

Mark & Carole
What a long strange trip it's been.

No longer RVing. Happy Trails to you.
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Old 11-18-2011, 07:55 PM   #40
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MPG is important but I believe you need to look at engine torque in making any final decision... Less torque = harder working engine = lower fuel economy....

Especially if you include anything but flat roads.....
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Old 11-21-2011, 12:39 PM   #41
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I get around 8 to 8.3 in my signature running 60 - 62. Wind is the biggest factor in MPG.
2014 American Eagle 45T
DD 500
Pulling a Honda CRV
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Old 11-21-2011, 12:56 PM   #42
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I've got an 87 21' TravelMaster savannah built on a Toyota one ton frame. It's got a 22r 4 cylinder engine and I live in a very hilly area. I'm currently getting around 13-15 mpg with it.

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