Mileage/Gas Tank Info for Class B to Live In

I had a 1999 Rialta FD and as I remember the tank was around 20 gallons, perhaps less. I also remember getting in the high teens in mpg. I liked the concept of the Rialta but had problems with the bathroom/shower and finding tires. Also, don't expect to go to a VW service center for maintenance. At least that was my experience.

And just to pick nits, a Rialta is a Class C.