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Old 03-09-2015, 06:12 PM   #1
Join Date: Nov 2014
Posts: 53
2007 Cat C-9 mileage?

What kind of fuel mileage should one expect with this engine? Of course this has the DPF system and would typically use more GPH. This engine has only 8000 miles on it and so not even broke in. I had been driving around 55-60 mph so as to shift into the sixth gear under the mode option and haven't gone over 6mpg.


2008 Country Coach 360 Inspire FE 43FT
425 HP CAT C-9 and CAT C-28 6sp Trans
Towing 1956 Chevy P-UP 1300 Short Bed
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Old 03-09-2015, 06:51 PM   #2
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Mine is a 2005 c9 but I get 7-8 mpg driving 62-65 mph. That is figured using miles / gallons at each fill up.

Revolution LE 38X C9 Cat
2011 Scion TC toad
1985 KLR 600 as a backup...
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Old 03-09-2015, 09:30 PM   #3
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My C9, no DPF gets 6.7 to 7 running 62mph. I have gotten 8 a few times on I-5 with the cruise set.
2 stroker
2006 Country Coach Inspire 360 40ft Genoa Designer Series, Samsung 197 RR
Cat C9--STEEL & COPPER Bolt Together Radiator w/ updated rubber mounting
SilverLeaf 330 Magnum 2812 PSW 2011 Ford Edge Sport-Air Force One
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Old 03-10-2015, 06:12 AM   #4
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Generally around 6 pulling 7,000 pounds at 65-70 using onboard computer.
2007 Fleetwood Revolution LE 40V
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Old 03-11-2015, 10:54 AM   #5
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Ok! thanks guys!!
2008 Country Coach 360 Inspire FE 43FT
425 HP CAT C-9 and CAT C-28 6sp Trans
Towing 1956 Chevy P-UP 1300 Short Bed
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