What is the fuel economy, or UNeconomy, on a "C".

:S Rough rule of thumb if you have a 30 gallon tank you can pass 30 gas stations before refuling if you have 40 gsllon you can pass 40 and if you have a 50 gallon you can make it to the 50th station.

Being that you are in Northern California you have mountains to contend with much like here in Washington State 8 to 10 would be good. I have a 26' Class C with the 8.1 Vortec running about 11,500 weight. I get 8.8 to 9.5 depending on where I go and how fast I drive. I would think that if you get 8 to 10 you should be happy. I plan on 9 and the difference between 8 and 9 on the 5200 mile trip we have planned this summer is about 57 gallons of gas or just 1 tank. I can live with that.

New 28ft V10 and we get between 8 and 9 mpg depending on wind. We weigh in at 12000lbs. We have a toad but haven't towed the toad yet. We keep it 62 mph.

Mpg varies a lot with terrain,(mountain grades vs flatlands), headwinds, and altitude as well as speed vs aerodynamic drag and rolling resistance. We get 7-9mpg with our 27 foot rig. I think that claims of 11 mpg may be based on inaccurate calculation. A class C motorhome is an un-streamlined box truck full of appliances, supplies, water, gasoline and occupants. If you can't afford fuel and all of the other costs of ownership and maintenance, motorhoming is not for you.

2007 E350 with gasoline 6.8L-V10

- trip average over 4000 miles
- all kinds of driving conditions
- rig weighs 9200 pounds empty
- aerodynamic shape
- always towing the 4300 pound Jeep Libery pictured
- normal cruising speed is 5mph over posted speed limits for towing

Trip Average 9.2mpg

A shorter trip without towing averaged 10.2mpg

My C is described in the sig. I get 9-10 mpg.

flew from New Hampshire to Mobile Alabama to buy the unit, drove it
1900 miles home over four wonderful days, lots of fun, 9mpg @65mph
2006 E350 V10 21ft 10klbs

So far on a month long trip pulling a dinghy it's been a low of 12 MPG and a high of 15+. Hills and aerodynamics affect it a lot. In states where I can only do 55 I get better mileage. Here in Utah driving on the freeway at 48 (as one poster is) would be dangerous. There are 80 MPH speed limits here. That would be a 30MPH delta in speed. I'm doing 65 and still going slowly relatively speaking.

rockhillmanor wrote:
E-450, V10, 31 ft - avg 11 mpg - if you keep it at a constant 55.
Got 12 mpg twice.

....and tail wind with all sails deployed. :B

You'll see a lot of folks getting around 9mpg which is our average. Some worse, because they tow and/or run at or over the posted speedlimits, others because they are in no hurry so they get in the way of those that are... B^)