In all likely hood it is the condensation from the Air Conditioning. It is normal. If it is a large amount-and the temperature is normal, it could be a leaking water reservoir tank, wiper fluid tank leaking, or a number of hoses related to the cooling system. If your car is running normally, it is likely just the AC though.
It all depends on where it is coming from. It could be something as simple as a loose clamp on a hose; to something as bad as a cracked block, radiator, or a bad water-pump. I suggest starting the car, then looking underneath, to see where the water is coming from
look underneath the car, if there's a long shaft coming from the engine to the rear its rear wheel drive if not its front
The same thing happens to my car. It is the door seal. Try using the water hose and looking for where the water is coming in.
Front side passenger underneath the car
Are you sure you have a leak? Most of the time when using the air conditioner, your car will appear to be leaking water or dripping underneath the vehicle, towards the front.
Facing the front of the car, the water pump is on the left front of the engine. It is to the right of the battery. You can trace the hoses coming out of it if you lift the wiring harness.
Front side passenger underneath the car
Look underneath to see which axles have driveshafts
underneath the car on the bottom o the engine in front of the passenger front seat
Jack the front of the car up and crawl underneath the front of it and look on the passenger side of the car right in back of where the foglights would be.
you have to take the front bumper off from underneath your car to get to the lights.
Jack the front of the car up and crawl underneath the front of it and look on the passenger side of the car right in back of where the foglights would be.