Journey with Confidence RV GPS App RV Trip Planner RV LIFE Campground Reviews RV Maintenance Take a Speed Test Free 7 Day Trial ×
RV Trip Planning Discussions

Go Back   iRV2 Forums > MOTORHOME FORUMS > Class A Motorhome Discussions
Click Here to Login
Join iRV2 Today

Mission Statement: Supporting thoughtful exchange of knowledge, values and experience among RV enthusiasts.
  This discussion is proudly sponsored by:
Please support our sponsors and let them know you heard about their products on iRV2
Thread Tools Search this Thread Display Modes
Old 07-04-2019, 03:40 PM   #57
Junior Member
Join Date: Aug 2015
Location: Lititz Pa
Posts: 19
I have 2005 Country Coach 40 foot with tag. 60-65 tops. My fuel mileage is six to seven mpg. As someone else stated I donít think the fellow was being honest with you on 12 mpg.
WHOOVER770 is offline   Reply With Quote
Join the #1 RV Forum Today - It's Totally Free! RV Community - Are you about to start a new improvement on your RV or need some help with some maintenance? Do you need advice on what products to buy? Or maybe you can give others some advice? No matter where you fit in you'll find that iRV2 is a great community to join. Best of all it's totally FREE!

You are currently viewing our boards as a guest so you have limited access to our community. Please take the time to register and you will gain a lot of great new features including; the ability to participate in discussions, network with other RV owners, see fewer ads, upload photographs, create an RV blog, send private messages and so much, much more!

Old 07-04-2019, 03:44 PM   #58
Junior Member
Join Date: Feb 2018
Posts: 4
Cruise speed

I drive a 2004 Sprinter upfitted by Forest River I purchased used. Since 100,000 miles I have recorded every drop of fuel I have added. I set the cruise at 65 mph using the GPS not the speedometer for accuracy. After the most recent trip the cumulative fuel economy for over 30,000 miles was 20.49 mpg.

Occasionally when I have to get away from some yahoo who insists on riding 25 feet behind me in the left lane, I will kick it up a notch. That has gone as high as 78 mph, but only for a few minutes. On rare occasions I have cruised at 60 mph for as long as 350 miles.

If you do not average several tanks of fuel, in my opinion, you really have no idea what your actual mileage really is.


bbill66 is offline   Reply With Quote
Old 07-04-2019, 03:46 PM   #59
Registered User
Join Date: Aug 2013
Posts: 202
Originally Posted by Texas John View Post
We cruise about 60 mph in the right hand lane. I know many go faster. But our trip is about the journey as well as the destimation and we are comfortable at 60. We also limit our daily progress to about 250-300 miles or six hours max. Try to stop by 4:00 but no later than 5:00 to get camp set up!
For many years I drove the same speed as the 4wheeler traffic and I did that pulling either a 20 ft stacker with one or two cars in it or a heavy utility trailer with a Hummer(H1) on it. 10 years in a 43ft diesel pusher and more recently, a 43 ft truck conversion, 70 to 80 mph. Always had at least two blow outs every trip on the trailers. The runs were always 500 to 1000 miles. Got really fast at flipping on spares but finally said to Hell with that. I reluctantly slowed down to 65, got the highest rated tires I could find, carry 4 spares and no more blowouts. Last trip from S La to Moab, Utah before slowing to 65, three trailer blowouts and a wheel ripped off the hub.
BUT, 60 is TOO slow. If you are in Florida, the average driver is used to dodging poky old people in RVs(yes, I too am very old, but not pokey). Out west you are 20 mph slower than average traffic. I would keep the hazard lights on like truckers do when they are moving slower than expected on the Interstate. Sure you might pinch out a sandwich worth of gas mileage every few hours on the road but I think moving close to the average speed of others is worth a sandwich for safety. Go faster and forget the gas mileage!
ItalGerBrit is offline   Reply With Quote
Old 07-04-2019, 03:51 PM   #60
Senior Member
DennisZ's Avatar
Monaco Owners Club
Join Date: May 2006
Location: Pipe Creek, TX
Posts: 677
Originally Posted by FlatsixV2 View Post
For What it's worth -

I have a 42' diesel pusher with 400HP Cummins...

My mileage is probably 6.5 to 8.5 MPG 85% of the time at 62 MPH.

Good Luck with your new rig!
Same results with my 400 ISL.
Dennis & Debbie Z (Retired) F415847
Pipe Creek, TX
2008 HR Endeavor 40PDQ / 2015 RAM 1500 Toad
DennisZ is offline   Reply With Quote
Old 07-04-2019, 03:55 PM   #61
Junior Member
Join Date: Jan 2018
Posts: 11
We generally cruise at between 60-65 or 65-70, depending on the speed limit and traffic flow along Interstates. Our gas mileage averages around 6.7 MPG, not great but th elife-style makes it worthwhile.
Escape42 is offline   Reply With Quote
Old 07-04-2019, 04:00 PM   #62
Senior Member
Join Date: Jun 2013
Posts: 236
I pull a 35ft Montana and I set my cruise control on 60. I get 8.1 MPG. You will probably never see 12 MPG in your Monarch unless you're going down hill with a tail wind.
StageCoachDr is offline   Reply With Quote
Old 07-04-2019, 04:00 PM   #63
Senior Member
lrsses's Avatar
Join Date: Feb 2016
Posts: 663
We average between 7 and 8 MPG best is 8.9 on I10 between Baton Rouge and Pensacola at 65 above that it goes downhill. On 2
I-20 7.5.
Larry and Sheila 2008 Fleetwood Discovery 39R
Retired U.S. Air Force (SAC) Vietnam Veteran
2022 RAM 1500 5.7 HEMI
lrsses is offline   Reply With Quote
Old 07-04-2019, 04:04 PM   #64
Junior Member
wfterry's Avatar
Holiday Rambler Owners Club
Join Date: Mar 2017
Location: Friendswood, Texas
Posts: 19
Originally Posted by Farkey View Post
Being new in the RV world I have numerous questions and here is my latest.

At what speed do you people usually cruise on an interstate highway?

I travel at about 60mph because the previous owner said that was the best speed for fuel economy and he would average 12 MPG on a trip.

On my last trip of just under 500 miles, I tried to cruise at 60mph and at the end I got 8.2 MPG. Now mind you that was through the hills in the Finger Lakes, but still getting almost half of what he did.

Unfortunately, I can't ask him any questions because he passed away just after selling me the rig.

So I will be very appreciative of all what you have to say on this subject.

Thank you
I have a 2000 34' gasser V10 Ford andvthecprevious owner told me he could get right at 10 mpg.
He had the Banks Exhaust and Cold Air Induction added and chipped, it has tonnes of power and there have been several times on level highway runs cruising between 62-65 mph I have got 10 mpg (no tow) but through hills and such I am glad to get between 8.5 & 9 ish.. 12mpg ain't no way.
wfterry is offline   Reply With Quote
Old 07-04-2019, 04:05 PM   #65
Senior Member
bluegrassrv's Avatar
Join Date: Sep 2013
Location: Leland, NC
Posts: 166
Speed & mpg

When I had my 2006 Chevy Duramax dually pulling a 30í tt I set the cruise on 74 and got around 8 mpg. My 2004 Country Coach Intrigue, C13 525HP, towing a 2007 Chevy 1500 4X4, I tried to set the cruise at 62 or so to save fuel. Iím too impatient. On interstate I set the cruise at 75 and got 5 mpg.
2018 GMC Sierra 3500 Denali Dually
2021 Coachman Freedom Express 321FEDSLE Liberty Edition
bluegrassrv is offline   Reply With Quote
Old 07-04-2019, 04:14 PM   #66
Join Date: Aug 2017
Posts: 54
Our Newmar diesel gets between 8-9 mpg depending on the terrain and our speed. As for what speed to cruise, that largely depends on the road I am driving as well as the winds and how far we have to go on a given day. I have had it up to 75-80 on flat interstate in Utah with no wind, but typically do about 65-70 mph most of the time.
MarcM is offline   Reply With Quote
Old 07-04-2019, 04:16 PM   #67
Junior Member
Join Date: Jan 2019
Posts: 27
55 mph in a 44' diesel pusher towing a CRV on a dolly = 8.4 mpg. 60 mph = 7.0 mpg.
helferdm is offline   Reply With Quote
Old 07-04-2019, 04:18 PM   #68
jhaig99's Avatar
Tiffin Owners Club
Join Date: Jun 2012
Location: Mobile, Alabama
Posts: 71
Best Speed

For my 2013 Tiffin 34íRED, 62 to 65 mph
jhaig99 is offline   Reply With Quote
Old 07-04-2019, 04:19 PM   #69
Junior Member
Join Date: Jan 2014
Location: Vacaville calif
Posts: 1
Cruising speed

I have a2017 Thor class c MOTORHOME when we went cross country we got 10 mpg. The cruising speed Was 60 mpg The one time I filled up I drove around 65-70 and my mileage dropped to 8 mpg.
georgeduncan is offline   Reply With Quote
Old 07-04-2019, 04:22 PM   #70
Senior Member
Thor Owners Club
Ford Super Duty Owner
Join Date: Aug 2015
Location: IL
Posts: 119
70 MPH

Gas mileage is not our primary concern. Weíd both rather ďget thereĒ as we are vacationers and weekenders. I set the cruise at 70 for the highways, and adjust for conditions like rain or high winds.

Our Ď16 Miramar rides pretty well so itís not a white knuckle experience. We are disciplined about vehicle weight, both the coach and toad, and I set the tire pressure to the weight, according to Michelinís numbers, not Thorís sticker.

We also have a TPMS so we can keep an eye on temp and pressure on every trip and we check it regularly.

The one challenge I havenít figured out? How to deal with the morons merging into the traffic flow who pay zero attention to the situation.....
JD11 is offline   Reply With Quote

Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)
Thread Tools Search this Thread
Search this Thread:

Advanced Search
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off

Similar Threads
Thread Thread Starter Forum Replies Last Post
Cruising Speed with 454 and 3-Speed Transmission NF6X Vintage RV's 18 05-31-2019 07:46 AM
Class A DP Comfortable Cruising Speed? The Renegade Class A Motorhome Discussions 137 10-24-2018 07:43 PM
Comfort Drive is loose at cruising speed Mikenchelby Newmar Owner's Forum 9 08-29-2018 11:38 AM
Cruising speed with the tow'd hookup? bighatnohors Toads and Motorhome Related Towing 41 07-10-2015 03:02 PM

» Featured Campgrounds

Reviews provided by

All times are GMT -6. The time now is 12:50 PM.

Powered by vBulletin® Version 3.8.8 Beta 1
Copyright ©2000 - 2023, vBulletin Solutions, Inc.