I know many have experienced this before but this is my first 300td and this morning, after a rainy day yesterday (not too heavy), I found water in the passenger cabin towards to firewall and along the door (most likely gathered there because parked on a slightly unlevel street leaning toward the passenger door). Also a bit of dampness in the rear of the wagon near the driver side rear wheel and behind the back seats. I am going to check the drain holes under the hood when I get home, but wondering if anyone can give me a few other options to look at. Pretty sure its not the AC as I was not running it last night while driving in the rain.