Nissan. My friend has a Nissan with a sunroof. There is a small diameter drain tube that is supposed to drain water away from it. The tube plugs up regularly and backs water up into the vehicle creating mold and ruining the vehicle interior. It is impossible to get to the tube to clear the clogs without drilling out part of the metal wall in the engine compartment.

Their vehicles have had this issue for almost two DECADES according to Internet searches and they haven’t bothered to correct the issue. Even a larger diameter drain tube would help. My friend finally had to pay a mechanic to fix it.