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Old 01-20-2013, 07:18 PM   #1
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Another mileage question

My wife and I are just getting into rving. We are really interested in an 07 29' class c coach built on chevy frame-- 6.0, allison transmission. The seller insists that he consistently gets 12mpg at 60 mph. Does this jive with what some other operators with this engine are getting? Also, some opinions on the Georgie Boy coaches. They are new to me.

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Old 01-20-2013, 07:23 PM   #2
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I would expect something in the 8 mpg range.

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Old 01-20-2013, 07:30 PM   #3
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Perhaps he only drives downhill when the wind is at his back? I agree with Ken, 8MPG is your ballpark.
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Old 01-20-2013, 07:46 PM   #4
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Actually my VMSpc will consistently show over 14 with our DSDP towing the Odyssey on flat ground with no wind. However the actual overall fuel mileage is lower, like around 8. Maybe I'll just tell people I get 14 with ours!!
Lots of people seem to forget how to calculate mileage when they go to sell a rig!
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Old 01-20-2013, 07:52 PM   #5
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We have a '93 Monaco DP that we have pulled a 20ft equipment trailer with a 4Runner and a full bagger Harley on it and have gotten 10mpg for most of a 7k trip last year. It can be done.
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Old 01-20-2013, 10:18 PM   #6
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It depends how you drive. If you have a heavy foot the milage is going to go down the tube. If you can stay out of it with the foot, then milage will be better. I don't drive a MH but the same applies. Before I started trying to improve the milage I was getting 10/12mpg pulling the TT. Now I get 13 regularly. The one long trip we took with our 2012 Honda civic I got 46 going and 45 coming back. It was about 500 miles round trip and over a pass.

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Old 01-21-2013, 06:18 AM   #7
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Originally Posted by Ramblin View Post
Perhaps he only drives downhill when the wind is at his back? I agree with Ken, 8MPG is your ballpark.
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Old 01-21-2013, 08:50 AM   #8
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I have no experience with the 6.0 liter Chevy engine in the Class C you are considering. I do have experience with this engine in pickups. With reasonable driving speeds, you should be able to achieve 10 mpg or so in a 29 foot rig. I have the 8.1 engine in our 31 foot class A, and like others here get around 8 mpg in it.
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Old 01-21-2013, 09:46 AM   #9
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Hopefully someone who actually owns a similar rig will see your question. My sister and BIL own a 31' C class Itasca with a Chevy engine, and I believe they get around 7-8 MPG pulling a Jeep toad. As far as Georgie Boy, I can't comment other than to say there are lots of satisfied owners posting on the forum. Good luck.
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Old 01-21-2013, 11:25 AM   #10
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Originally Posted by Ramblin View Post
Perhaps he only drives downhill when the wind is at his back? I agree with Ken, 8MPG is your ballpark.
X3, when we had a 29' "C" that was our MPG.

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Old 01-21-2013, 10:30 PM   #11
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Hi and

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Old 01-22-2013, 06:22 AM   #12
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on my class "c" i would get about 8mpg it was 2011 ford chassis on my current rig i get about 13 (6in the city 7 on the interstate) i have never been concerned about mpg it the f.p.m. that counts Fun Per Mile and have clocked about 20,000 miles since 2010 and the only ones that have only a little regret were the trips back to da house
just liven life in east tn or where ever our
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Old 01-22-2013, 01:28 PM   #13
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There are gas chassis Class C's that get 9-10 mpg overall, so 12 mpg in selected, optimal situations is not far-fetched. Just don't expect to average 12 mpg.

As a comparison, my 38,000 lb 40 ft diesel gets just shy of 9 mpg cruising at 60 mph on an interstate but my trip averages run closer to 8.0 and the lifetime mpg over 67k miles in all kinds of driving scenarios is 7.51 mpg.

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