Are you using the air conditioning? Usually they drain in pairs on the left and right side. Ours drains more condensation on the right/passenger side.

 

It's not leaking, you're running the AC and the evaporator water is vented to the ground. Like literally every other car made.

Drive around without the AC on and you won't see it.


If it was coolant you'd smell/taste/see the difference and it generally isn't hat far back. Where you are is literally where the vents are.

 

yes, this is the AC condensation, just like a cup of cold water condensates or "sweats".
it is drained to the ground as designed!
turn off the ac and it will go away!

any AC system, even beyond a car (i.e home AC) needs to drain the condensated water build up.

 

I'd like to throw in there, if the fluid is clear, but somewhat oily, check to make sure that your heater control valve is not cracked and leaking.