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Author Topic: MPG on Cummins 650  (Read 6165 times)

David Burris

  • Guest
MPG on Cummins 650
« on: December 02, 2011, 03:01:12 PM »
Can anyone tell me the mpgs they are getting on the newer Cummins 650 hp engine.??
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Gil_Johnson

  • Guest
Re: MPG on Cummins 650
« Reply #1 on: December 03, 2011, 11:29:31 PM »
 :)David,

This probably not the best forum to ask your question.  Beaver owners would not have the new Cummins.  You may want to try IRV2.COM
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David Burris

  • Guest
Re: MPG on Cummins 650
« Reply #2 on: December 04, 2011, 01:27:39 AM »
Thanks,
3 replays on Cat 625.  
1- 5/5-6
2.  6/5-7
3, 7-8
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Gerald Farris

  • Guest
Re: MPG on Cummins 650
« Reply #3 on: December 04, 2011, 01:39:53 AM »
David,
The 650 HP Cummins ISX engine was used in a hand full of the 2009 model Marquis coaches. However most of the 2009 Marquis coaches were equipped with the C 15 Caterpillar engine that is rated at 600 or 625 HP.

Gerald  
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David Burris

  • Guest
Re: MPG on Cummins 650
« Reply #4 on: December 04, 2011, 02:38:45 AM »
yes, but Monaco put them in executive coach??  Even the Cat at 625 should be comparible.  Just trying to get some idea?

Thanks
David
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Gil_Johnson

  • Guest
Re: MPG on Cummins 650
« Reply #5 on: December 04, 2011, 03:27:29 PM »
David,

You're not considering changing out the Contessa, are you?  There may be times when the extra HP would be good, but not often.  I get 7.5 - 8 mpg towing a 5,000 vehicle at 65-75 mph.
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Phil Sales

  • Guest
Re: MPG on Cummins 650
« Reply #6 on: December 07, 2011, 01:54:41 AM »
I get about 7.5, at 65 /73 in my Marquis,C-12 455. About as good as I can expect. towing an "04 Dodge Dakota ,Quad cab ,4X4
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