Generally on any RV, there can be leak issues over time. Class Cs are known to have leaks in the clearance lights which is easily fixed with proper caulking. The cap to roof seam can lean and again needs maintenance.
Ken
Amateur Radio Operator.
2023 Cougar 22MLS, toted with a 2022, F150, 3.5L EcoBoost, Crewcab, Max Tow, FORMER Full Time RVer. Travel with a standard schnauzer and a Timneh African Gray parrot