We got our sixth motorhome in May, an identical model and color as the last one, a 1998 Lazy Daze with 185,000 miles on it. We were afraid it would not last as long as we will. The other four were each kept about nine years each, back to before they were called Class C's.
The new Lazy Daze has several improvements in floor and fabric to the old, as well as updated appliances. Alas, swamp coolers are no longer available. I'm sure it will also go 10 years and well over a hundred thousand miles.