Hello, dear MTler, for about 4 weeks I have my M6, E63 Cpupé in continuous use – so in wind and weather – and he was only standing outside and there was also a lot of rain. Otherwise he always parks in the garage. Yesterday was again “great clean making” and when I took the floor mats driver side ‘it was under it very wet at the back to wet front. Odorless and definitely water. Luggage compartment wheel pit and passenger side dry. So with a lot of kitchen roll as well it was dried. Then everything thick with kitchen roll designed and then approx. 500- 1.000 l water in 5 minutes with the fire hose poured over it but without high pressure – extra much at the window top and between windshield and bonnet. Before nor the air-conditioning filter boxes tested – everything dry. No air-conditioning use. After that: neither at the window inside, door and window seals, nor where water infiltration can be detected. Air-conditioning filter box and also under the covering in the footroom above the pedals all It dry. No sunroof, as carbon roof.Question:[/u] Did someone ever have such a thing? or does someone have an idea where the water could come from?