View Poll Results: What kind of mileage do you get?
3-5 with Gas 12 3.15%
5-7 with Gas 36 9.45%
7-10 with Gas 38 9.97%
10+ with Gas 15 3.94%
3-5 with Diesel 2 0.52%
5-7 with Diesel 23 6.04%
7-10 with Diesel 138 36.22%
10+ with Diesel 117 30.71%
Voters: 381. You may not vote on this poll

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Old 01-15-2013, 10:57 PM   #81
Bus Crazy
Accordion's Avatar
Join Date: Aug 2011
Location: Central Tennessee
Posts: 1,093
Year: 1973
Coachwork: Blue Bird
Chassis: All American
Engine: CAT 1160 V-8 Diesel
Rated Cap: 72
Re: What kind of milleage do you get?

Originally Posted by Shawn C
I have a 366 gasser and a 5 on the floor manual tranny but, I just bought it not too long ago so haven't had the chance to take it on a trip yet.
I would like to mention that wind drag is a cubic function so if you double your speed you will need 8 (2x2x2) times the power to overcome wind resistance.
quote from wikipedia " the power needed to push an object through a fluid increases as the cube of the velocity" here's the link.....
My approach will be to go as slow as possible without tying up traffic. I'm eager to see what my milage will be.

I tried going slower (60mph) on a trip last summer, but my bus did not do very well going up hills at that speed. It would slow down tremendously. I think the "sweet spot" is pedal to the metal which is a little over 70mph.
Best Home Yet - Strong Command Center --- viewtopic.php?f=9&t=10764
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Old 01-16-2013, 08:34 AM   #82
Join Date: Dec 2012
Posts: 21
Re: What kind of milleage do you get?

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Old 04-06-2013, 09:20 PM   #83
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Join Date: Oct 2011
Posts: 28
Year: 1993
Coachwork: Carpenter
Chassis: International
Rated Cap: 36
Re: What kind of milleage do you get?

I get about 8 mph, diesel short bus. My tank only holds about 20 gallons so I start getting nervous if I've been driving a couple hours and don't see a gas station. I don't know if I could ever drive across North Dakota or somewhere like that. So some people add extra gas tanks or replace their gas tanks with bigger ones?
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Old 05-05-2013, 07:38 PM   #84
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Join Date: May 2013
Posts: 24
Year: 1995
Coachwork: Carpenter
Chassis: Ford B-700
Engine: Cummins 5.9l Turbo Diesel
Rated Cap: 28
Re: What kind of milleage do you get?

5.9 cummins turbo. allisonautomatic... at 60.... 65-70mph it gets 6.5 7mpg in the hills of missouri
Yes..... it IS a bus, and no you can't have it!
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Old 05-16-2014, 11:16 PM   #85
Bus Nut
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Join Date: Jul 2013
Location: Danville, California
Posts: 345
Year: 1988
Coachwork: Crown
Chassis: Supercoach
Engine: DD6-71T
Rated Cap: 78
Re: What kind of milleage do you get?

My 1988 Crown transit had 78 passenger capacity. It has a Detroit Diesel 6-71 turbo with Allison auto and a 112 gallon fuel tank. It got almost 12 mpg bringing it from San Diego to San Francisco Bay Area. About 500 miles.
Greg and Donna Marvel

Danville, California
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Old 05-17-2014, 07:15 AM   #86
Bus Crazy
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Join Date: Apr 2014
Location: EHT New Jersey
Posts: 1,134
Year: 2003
Coachwork: AmTran
Chassis: International 3000RE
Engine: T444E/AT545
Rated Cap: 75
Re: What kind of milleage do you get?

I got about 10 coming back from Maine to NJ.
Hey! That's not an RV, that's a school bus.
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Old 05-17-2014, 02:19 PM   #87
Join Date: Jan 2013
Location: Central MN
Posts: 143
Year: 1977
Coachwork: Chevy
Chassis: C/60
Engine: 350 V8
Rated Cap: 54
Re: What kind of milleage do you get?

1977 Chevy C/60, 4plus 350 gasser. We got around 6 on a 200 mile trip on mostly level ground.

On another note, my 98' 5.9l Grand Cherokee gets around 11 mpg average on 92 octane. 6 doesn't seem too bad for an 11,000lb vehicle when my SUV gets less than twice that and only weighs 4,200lbs.
Passes everything but gas stations.
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Old 05-21-2014, 02:33 PM   #88
Bus Nut
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Join Date: Jun 2013
Location: Frederick Maryland
Posts: 831
Year: 1999
Coachwork: Thomas
Engine: 3126
Rated Cap: 72
Re: What kind of milleage do you get?

In my 1999 Thomas RE 72 pass bus. I averaged 10.5 in my 1800 mile round trip to Indiana. I'm very happy with these numbers.

visvi Cherokee for Journey, Sounds Like Oeesha

My Conversion Thread:
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Old 09-30-2014, 10:40 PM   #89
Join Date: Sep 2014
Posts: 36
Year: 1951
Coachwork: Wayne/ IHC
Chassis: L-163 International
Engine: SD240 / 4 sp.
Rated Cap: 39
Re: What kind of milleage do you get?

My 1951 IHC / Wayne gets 8/10 mpg depending on conditions. SD240 gas. 4sp 6.16 gears. Soon I will have 5.70 gears and I will report. I once had one of those bug deflectors I put on a 78 Impala. It improved my highway milage by 3mpg. And it kept my windshield clean. I'm going to put one on my bus and test the results. They send the airstream over the top instead of slamming into the windshield. An air dam on the front bumper may work as well. It would have to be adjustable but keeping air out from under the vehicle is important. Lots of drag under a bus.
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Old 04-12-2015, 10:30 PM   #90
New Member
Join Date: Apr 2015
Location: Washington
Posts: 8
Year: 1998
Engine: 6.5L Chevrolet Turbo Diesel
Hey guys, I'm new to the forum and to bus conversion. I am currently looking at buying a really clean 1998 Thomas short bus, 18 seater at 9,500lbs weight. It has a 6.5 Chevy turbo Diesel engine, and a 35 gallon fuel tank. With those numbers, what do you think would be reasonable numbers to expect for mpg? Thanks much!


As my girlfriend and I work on the bus, I'm sure I will be scouring these forums (as I already have been!) and asking more questions!
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