Class C under 30 ft. with gas engine

kstorms wrote:
Thanks - so at 10 mpg on average i can see how often I would have to fill up....

I know that gas engines typically do not last as long as diesel...but I am leaning towards a gas engine because:

The average RV is less than diesel
Maintenance is usually less
And - if I have heard this correctly, I can get an RV serviced at any auto service center that can service a car (as long as they have the capacity to accommodate the size of the RV - and I am getting one that is less than 30 ft...) which is nice if something happens on the road.

I have not read through the thread yet but would like to comment:
Gas milage. A lot depends on how tall a RV and the shape. I get just over 11mpg often enough for it to be a real number, but that is on very flat roads with little traffic. In the Shenandoah I get mid 8s. The average is high 9. I have a 26.5 Lazy Daze MidBath.
The Ford V10 is a strong motor and lots of folks are seeing 200k miles. If the RV is running close to the max weights the drive train will be under more stress (doesn't mater diesel, gas, Ford, Chevy, Mecer or what ever). If you are looking at used RV I would not worry as much about milage as I would worry about the water penetration into the house part of the body. I suspect that the Chevy motors are equally reliable as long as the house part of the RV is not pushing the upper limits of what the RV can handle.