MPG in your C or super C

WA7NDD wrote:
Just returned from a 2341 mile trip to Oregon and back home in Idaho.
1998 Four Winds 22rk V10, weighed out at 11800 Lbs when we left. Speed limit in
Oregon is 55 mph on just about every road. We used 168 gallons of gas at
13 miles per gallon. I never saw a gas pump with 85 octane, 87 octane was the lowest. Prices in Idaho were $3.55 a gallon, in Oregon the range was $3.85 to $4.05. The Four Winds did just fine never gave a problem.

2341 miles divided by 168 gallons works out to about 13.9 miles per gallon. That's way above the norm for the Ford V10 powering an 11,800 lb. Class C ... even when traveling at 55 MPH.

Way to go! If all of us V10 RV'ers could achieve that, there might not be much interest in diesel engines for Class C rigs.

98Evo wrote:
Regina to Kelowna and back (across the Rockies) pulling a car on a trailer. Just over 2000 miles avg 10.82 Speed 60-65 mph

Is that 10.82 per Imperial Gallon or USG ?

Just returned from a 2341 mile trip to Oregon and back home in Idaho.
1998 Four Winds 22rk V10, weighed out at 11800 Lbs when we left. Speed limit in
Oregon is 55 mph on just about every road. We used 168 gallons of gas at
13 miles per gallon. I never saw a gas pump with 85 octane, 87 octane was the lowest. Prices in Idaho were $3.55 a gallon, in Oregon the range was $3.85 to $4.05. The Four Winds did just fine never gave a problem.

9.5 mpg towing our Jeep Liberty, 10.5 mpg when not
Figures given are 4000 to 5000 mile trip averages


Influential Factors
Highway speeds average 65 mph
Notable generator usage naturally lowers my averages
2007 Ford E350 with gas 6.8L-V10 engine
2007 Phoenix Cruiser model 2350, 23'-8" long, 9'-10" to top of a/c and aerodynamic
RV weight on trips is just under 10,000 pounds
Jeep Liberty weighs 4300 pounds
As shown below in my signature

I suppose I could drive 55mph with a tail wind for a one hour get-away to a remote location, turn on my gas generator for the weekend and drive back home just to average One MPG.

I have averaged 9.0 mpg towing my Subaru and includes some generator use. See my signature.

2014 tioga ranger 25G E450 V10 actual length 26.5 feet long.

with 2500 miles on it got 8.5..nothing being towed..55 to 60 mph.

the E450 has a 4.56 rearend and the E 350 has a 4.10...maybe a little better mileage with all things equal.

But I like the extra load carrying cap.

The price of gas or diesel fuel is liable to go higher due to happenings in the middle east and American politics. Cost of fuel is a small part of the cost of ownership and usage of RV's. Many ignore the costs and see camping and touring as "priceless". Comparing cost of owning, using and maintaining including DMV, insurance,storage if required, to driving a car and staying in motels, etc are like comparing apples and bananas. If you can afford it and will actually use and really enjoy the RV often, it may be " worth it". It's a truck full of appliances and electro-mechanical stuff that becomes a hobby in itself to maintain,more like a cabin cruiser than an SUV.

Read the FAQ's at the top of this forum page and search "miles per gallon", for more info.

Just returned from a 7,360 mile, 22 state, 2 month trip in our 2012 24' Nexus C, E-350 with the V-10, no toad. The trip took us from Tucson to Maine and home again. Our best mileage was 10.75 and the worst 8.2. We averaged 9.35 which included a lot of city traffic, grocery getting, dirt roads etc. About 40% of the trip was interstates at 60-62 which usually got us 9-10. Lots of back country two lane blacktop at 50-60 pushed us up to 10+but driving into 25 to 35 mph winds on three consecutive days generated the 8.2.

Weather and road conditions along with your resulting speed have a huge impact on your real world mileage. I run with the Scan Gauge displaying both average and real time mpg along with trans fluid and coolant temps. Every fill up confirmed what the Scan Gauge had been reporting.

:C

2011 Ford E450, 27 footer. Worse ever 7.5x1, usually 8.5-9.5 at speed limit on cruise, no toad, includes mountains. Best ever 10x2. Usually, 1000# or more below OCCC, fresh water @ 1/3 full, black and gray tanks empty.

we have a winnebago aspect 28, F450 w/V10. We drive a little faster I guess than most. We are getting 8-8.5 @ 65mph. Just crossed Wolf Creek pass and averaged 7.3 from Colo Springs to Pagosa Springs. We tow a Hyundai Elantra 2700lbs. We drove 70 MPH across part of Neb and colo and got 8.3 in Denver. We saw insignificant difference by trying to go slow. We got 9.3 in Neb from Chicago.

I also run a 5 Star tuner which seems to have helped a lot. Engine is more civilized over all. Same was true with my F350 diesel, got almost same at 80 as we did trying to go no more than 70, it has a hypertec tuner on it.

I think some of it is the B+ design, less overall drag from the overhead bed etc., slightly rounded sides. Aerodynamics are important. With a slide in camper in my old pickup we stayed at about 7-8 and it was almost the same design as the traditional class c.

However, weight also plays a major factor. Bigger generally means heavier.