Is it normal for the exhaust pipe to have a small hole leaking water?
2 Answers
It is normal for a car's exhaust pipe to have a small hole leaking water. This indicates that the engine is working properly and the combustion is sufficient, resulting in good atomization. If the exhaust gas from the car's exhaust pipe comes out with mist, it means the engine is in good condition. The exhaust pipe designed by the manufacturer usually has a small hole for drainage. Some exhaust pipes are designed with the tail end lower, allowing water to drain out during driving. This is why you may see water dripping from the exhaust pipe of the car in front of you. Some exhaust pipes have a lower middle section, and the manufacturer will drill a hole at the lowest point in the middle to allow water to drain out. Exhaust pipe maintenance tips: When driving in the rain or washing the car, be sure to prevent water from entering the muffler, as this can easily cause rust and affect the exhaust pipe's performance. If water accidentally enters the muffler, start the engine immediately to warm up the car and try to drain the accumulated water from the muffler. This is particularly important for exhaust pipe maintenance.
I've been driving for nearly 30 years and have seen this issue countless times. That small hole in the exhaust pipe leaking water is actually quite normal, so don't worry too much. It's primarily designed to drain condensation water, as engine combustion produces water vapor and carbon dioxide, which condense into water when cooled and accumulate in the pipe. This small hole is specifically engineered to allow water to drain promptly, preventing internal rust and corrosion. Without this hole, excessive water buildup would accelerate exhaust pipe deterioration and shorten its lifespan. I remember having this same misunderstanding when I was younger—seeing water on the ground and rushing to the repair shop, only for the mechanic to laugh and say it was fine. When checking, just make sure the water is clear and transparent; if it appears milky or has an oily smell, then there might be an issue. For routine maintenance, I recommend regularly inspecting the exhaust pipe's condition and keeping the small hole unobstructed to avoid mud blockages. This way, your car will run more smoothly and hassle-free.
