Passat 1.8T has this problem. After a few years, the hot water tank of this car is easy to leak. It is suggested to remove the instrument panel and replace the warm water tank. Only by replacement can the water leakage problem be completely solved. Let you rest assured of using the car.
I hope you are satisfied with my answer and wish you a happy life! If there is something wrong with the car, ask the car master. 4S shop professional technician, 10 minutes to solve.