What is the liquid leaking under the car?
2 Answers
The liquid leaking under the car could be coolant from the radiator cooling system, windshield washer fluid, or condensation water generated during air conditioning use. Inspection and troubleshooting methods: Coolant: Check if the radiator coolant is low and inspect the cooling system pipes for looseness or damage. Ensure the coolant reservoir isn't overfilled (overflow may occur when temperature rises). Radiator: Check for underbody scratches at the radiator bottom; inspect the windshield washer reservoir, pipes, and connections for looseness or damage. Determine if the dripping is caused by normal condensation drainage during prolonged air conditioning use in hot weather.
In my early years of driving, I often noticed water leaking under the car, which made me quite nervous at first. Most of the time, that water is condensation from the air conditioning—drops formed when the evaporator cools the air, common in summer, clean and transparent. But if the water is colored, like green or orange coolant, it might indicate a leak in the cooling system, which could affect engine cooling. Location matters: AC water drips from the middle of the car’s underside, while coolant leaks near the engine. Windshield washer fluid can also leak—it’s blue, transparent, and odorless. I suggest getting down to check the water’s color and texture—clear water is fine; oily or colored fluids mean a repair is urgent. Brake fluid or transmission oil, usually dark and smelly, is also hazardous. Safety first—don’t overlook small details. Early checks prevent breakdowns on the road.
