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 06-28-2019, 06:32 AM   #1
Senior Member
Monaco Owners Club
Join Date: Jul 2018
Location: Elizabethtown, Ontario
Posts: 226
Cruising Speed

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
40 foot 2002 Monaco Diplomat
2005 Ford Focus to tow around
Farkey 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 06-28-2019, 06:36 AM   #2
Senior Member
69Stang's Avatar
Join Date: Jul 2015
Posts: 1,881
Average 12 MPG? I don't think he was completely honest about that.

60-65 MPH and average 7.5 MPG in my 34" gasser.
2010 Phaeton 40QTH on a PG Chassis.
2017 Lincoln MKX.
Air Force One brake system and Blue OX Towbar.
69Stang is offline   Reply With Quote
Old 06-28-2019, 06:39 AM   #3
Senior Member
FlatsixV2's Avatar
Join Date: Sep 2015
Posts: 193
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!
2018 Fleetwood Pace Arrow
82 & Sunshine
FlatsixV2 is offline   Reply With Quote
Old 06-28-2019, 06:42 AM   #4
Registered User
Ford Super Duty Owner
Join Date: Nov 2014
Location: NW Ohio
Posts: 7,114
I have an older Ford F53 with V10. I average 7.0 mpg, running 62-65 mph with gross weight of 23,000 lbs fully loaded dragging a toad..
Waiter21 is offline   Reply With Quote
Old 06-28-2019, 06:43 AM   #5
Senior Member
jacwjames's Avatar
Monaco Owners Club
Join Date: Jun 2014
Posts: 15,100
12 mpg ??? I think PO was delusional.

I pretty much set the cruise at the speed limit. Depending on traffic I my be slightly higher or lower as I try to go with the general speed.

I get ~8 mpg pulling a Jeep. I've tested going slower or faster and it doesn't make a lot of difference.

FYI, if you get a Silverleaf VMSpc you'll get a very accurate reading of fuel mileage and be able to see consumption based on speed.
Jim J
2002 Monaco Windsor 38 PKD Cummins ISC 350 8.3L
2005 Jeep Grand Cherokee w/5.7 Hemi
jacwjames is offline   Reply With Quote
Old 06-28-2019, 06:44 AM   #6
Registered User
Join Date: May 2005
Location: Milford,CT.
Posts: 2,237
I usually drive between 62-65 I'm getting in the high 9's
mike brez is offline   Reply With Quote
Old 06-28-2019, 07:13 AM   #7
Senior Member
edgray's Avatar
Join Date: Oct 2002
Location: Madison, MS
Posts: 10,544
Imo, “most” class A MH get between 6 & 8 MPG. You should accept the PO’s claim as marketing hype. It ain’t gonna happen.
edgray is offline   Reply With Quote
Old 06-28-2019, 07:20 AM   #8
Senior Member
Join Date: May 2017
Location: Metamora, MI
Posts: 5,535
Use Search. Both cruising speed and MPG and both discussed together have been exhausted about a zillion times on this forum.

If you are calculating your mileage correctly, you are getting better than most. But you are also driving slower than most.
2002 Newmar Mountain Aire Limited 4370 w/ Spartan K2 and Cummins 500hp
ASE Master Certified (a long.....time ago...)
Dav L is offline   Reply With Quote
Old 06-28-2019, 07:37 AM   #9
Senior Member
richard5933's Avatar
Join Date: May 2019
Posts: 2,392
Tires on your coach most likely have a speed rating of 75mph. That doesn't mean that the tire manufacturer intended for you to cruise at 75, but rather that they'd be safe to do so for a specific length of time. I believe that it is a ten-minute standard.

I always try to leave considerable head room on any system capacity or rating like that. My cruise speed is between 60-65,usually right around 62mph.

Speed limits are often higher, sometimes lots higher. Sometimes in excess of the tire speed rating. Don't let speed limit for the road get confused with safe speed for your coach.
1994 Excella 25-ft (Gertie)
1999 Suburban LS 2500 w/7.4L V8
1974 GMC 4108a - Custom Coach Land Cruiser
richard5933 is offline   Reply With Quote
Old 06-28-2019, 07:52 AM   #10
Senior Member
Nohurry's Avatar
Join Date: Aug 2018
Location: Wa state
Posts: 218
Heh, heh, 12 mpg. Your doing pretty good at 8.2. Our 33’ gasser gives us 6-7 at 60-65 cruising speed. I don’t go go much faster than that unless I need to temporarily if the situation dictates it.
2007 National RV, Sea Breeze 1321, Ford F53,
Followed by a 2013 Wrangler JK Moab edition
Nohurry is offline   Reply With Quote
Old 06-28-2019, 08:07 AM   #11
Registered User
Join Date: Oct 2017
Posts: 4,985
Mileage can vary by 20% depending on the driver habits. Last week my Chevy DRW got 14.3 mpg on I-80 in NE pulling a gross wt of 25k. Now this is with cruise set at 60, very little wind, flat road, and not touching the brakes for 300 miles (probably the best condition to have). Usually I get around 9/10 mpg off the X-way.
grindstone01 is offline   Reply With Quote
Old 06-28-2019, 08:23 AM   #12
Senior Member
Mr_D's Avatar
Country Coach Owners Club
Solo Rvers Club
iRV2 No Limits Club
Join Date: May 2011
Location: Vancouver, WA
Posts: 37,725
My 45', 52,000# 650 hp mh gets 7.7 mpg over the last 56,000 miles towing a CR-V.
My previous 32,000# MH with 350 HP ISC and Banks kit (432hp) got under 8 towing a Honda Ody.
I cruise at about 62 using the cruise control.
2009 45' Magna 630 w/Cummins ISX 650 HP/1950 Lbs Ft, HWH Active Air
Charter Good Sam Lifetime Member, FMCA,
RV'ing since 1957, NRA Benefactor Life, towing '21 Jeep JLU Rubicon Ecodiesel
Mr_D is offline   Reply With Quote
Old 06-28-2019, 08:28 AM   #13
Moderator in Memoriam
TonyDi's Avatar

Newmar Owners Club
Join Date: Feb 2011
Location: Point Pleasant Beach, NJ
Posts: 31,663
If you were to search all the threads regarding MPG you would find that almost everyone is getting 6.5-8.5 mpg. I think perhaps the previous owner may have fudged his estimates or he was bad in math.
Tony & Ruth........... FMCA#F416727
2016 London Aire 4519, Freightliner chassis, Cummins ISX, 2018 Jeep Wrangler Unlimited, Blue Ox Avail with AF1. TST 507 TPMS
No amount of money can buy you an extra second of time.
TonyDi is offline   Reply With Quote
Old 06-28-2019, 08:41 AM   #14
Senior Member
Kahoona's Avatar
National RV Owners Club
Freightliner Owners Club
Join Date: Jul 2015
Location: Conch Republic
Posts: 2,579
Cruising speed in our old 30' gasser was 65-70 unless we wanted to talk then I brought it down to 60. At 55 we got 10mpg at 65 around 8mpg. Light weight, no slides short length.
33' 2008 National Tropical on a Freightliner chassis.We tow a 2001 XJ (Cherokee) RVM#189
Kahoona 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 06:36 AM.

Powered by vBulletin® Version 3.8.8 Beta 1
Copyright ©2000 - 2024, vBulletin Solutions, Inc.