You can pull the carpet back to see the drain hoses.

In my evap removal pic, you can see the drain hole to give you an idea where it is:

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2016 Monsoon Gray Audi Allroad - 21k
2008 Black Mercedes E350 4Matic Sport - 131k
2014 Jeep Wranger Unlimited Sahara - 62k
2003 Gray Mercedes ML350 - 122k