I noticed a musty smell in the car t'other day after it had been standing for a week and under the carpet below the back seats were two nice puddles in the depressions either side of the hump. The rest of the car is bone dry.
I very much suspect the sunroof drains are the cause as I can see damp on the "C" pillars when I release the back seat backs and fold them down. A quick look before it started raining agan
Thanks all..