Recently i sent my car for servicing at Honda in mumbai and there was also some wetness on the rear seat carpet due to rains. They inspected thoroughly & said your tail lights are damaged and the water is entering from it slowly. And they are charging me Rs:2400/- per taillight.
But i guess this is illogical reason. Still what you guys say?
Rest there isnt any leakage from the doors or wind shields as per them.