We finishing our fifth camping season with our nine year old Thor Hurricane. Have yet to experience a problem I could directly relate to something Thor built. Been towed home once due to a chassis problem, killed a tire when a valve stem seal failed, replaced the toilet after breaking three flush valves, replaced the generator starter. Can't think of anything else other than very minor issues found during routine maintenance that were simple to correct.
I've owned two homes that were both new construction and experienced more problems with both than with the coach and both homes had a 0 MPH speed limiter while the coach stops accelerating at 75.