I too had to get mine 3 times in (so far...). After the first and the second repair attempts I did the garden hose test for like 15-20 mins, which didn't show any leak, but after when rain falled I got traces of water in the cabin :angryfire:
After the last repair I didn't bother doing the apparently unworthy garden hose test again. I was told last time they found couple, previously unnoticed by them, holes on the seal of the rear soonroof which were dripping water. It hasn't rained since. I will call the rapair successful after several "good" rains during which car remains dry inside.
Unfortunately we don't have lemon law here in Canada, so we have to relay on dealership resolve our problems.
Anyone who got a leaky car - has your repair been successful (successful == at least 3 times it rained for more than an hour, car was outside and remained dry)?