I searched the class b forum for mpg related topics and found/read a bunch.First far trip on my class-B, 1990 Ford Econoline 250 Intervec Falcon with Ford's 5.8L windsor V8No check engine lights, passes emissions, recently replaced a few cracked hoses around throttle body and a bad throttle position sensor. No bad ECU codes either.Did a 135 mile round trip and used up 15 gallons, thus 9 MPG!!!90% highway at around 60mph. Light wind. Not carrying anything externally other than what came with the van (roof top/ac) and 2 solar panels that lay pretty flat (about 1" gap between roof and panel)Tire psi at 60 front/80 rear. Is this normal/avg? anything substantial I can do to improve MPG?Thanks!

Sounds bad. I get about that + or - 2 with our 30 ft. Class C V-10. But before you give up realize that the way we check MPG isn't real accurate and 1 short trip isn't enough to get close to a true reading. But, if you can't get 12 or 15, I guess why have a Class B?

That mpg doesn't surprise me. For the year and the rig. If your willing to travel at 50 mph you will probably gain a couple mpg.

I had a PW, it averaged 12-14 on the highway, normally 55-60 mph. Mine did not have the high top your picture shows. Around town was about 9-10. I agree with the statement, do about 3 fillups, average the 3. Also, if you were running generator, that figures into it

Other than driving slower there is not a whole lot you can do to vastly improve mpg. We tow our 32' TT and average about 8 mpg if we don't go over 65mph, unfortunately we tend to go a bit faster on the instates out here in the West. I stopped fretting about mpg early on when we starting RVing over a decade ago knowing it is just part of the cost to enjoy this lifestyle. Haven't recorded mpg on a trip in over ten years.

had 1998 looked almost like yours ,got 14teen all day long. we don,t drive over 65 mph. my 2007 LTV only gets 20mpg its a mercedes benz 5cyc diesel.

MPG woes | Good Sam Community

28 Replies

schlep1967
Nomad
May 23, 2016
Might try a bug deflector on the front of the hood. It may direct the air up over the top a little more efficiently.
Happy_Camper3
Explorer
May 23, 2016
a friend of mine used to have a 1991,looked exact same as yours. got 14.3 mpg averaged over 1200 mile round trip. for what its worth.
RoyB
Explorer II
May 23, 2016
The wind drag is what does you in...
midnightsadie
Explorer II
May 23, 2016
had 1998 looked almost like yours ,got 14teen all day long. we don,t drive over 65 mph. my 2007 LTV only gets 20mpg its a mercedes benz 5cyc diesel.
Sandia_Man
Explorer II
May 23, 2016
Other than driving slower there is not a whole lot you can do to vastly improve mpg. We tow our 32' TT and average about 8 mpg if we don't go over 65mph, unfortunately we tend to go a bit faster on the instates out here in the West. I stopped fretting about mpg early on when we starting RVing over a decade ago knowing it is just part of the cost to enjoy this lifestyle. Haven't recorded mpg on a trip in over ten years.
LadyRVer
Explorer II
May 23, 2016
I had a PW, it averaged 12-14 on the highway, normally 55-60 mph. Mine did not have the high top your picture shows. Around town was about 9-10. I agree with the statement, do about 3 fillups, average the 3. Also, if you were running generator, that figures into it
dave17352
Explorer
May 23, 2016
That mpg doesn't surprise me. For the year and the rig. If your willing to travel at 50 mph you will probably gain a couple mpg.
Jayco-noslide
Explorer
May 23, 2016
Sounds bad. I get about that + or - 2 with our 30 ft. Class C V-10. But before you give up realize that the way we check MPG isn't real accurate and 1 short trip isn't enough to get close to a true reading. But, if you can't get 12 or 15, I guess why have a Class B?

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MPG woes

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