Maybe this is a silly question, but I have been wondering about it for a few days now. I own a 2013 EX35 and I park it outside my building overnight. Every morning when I start the engine, I see water dripping from the tailpipe, and sometimes there is a little white smoke too. My son saw it and said something must be broken, but I remember my old Camry doing the same thing and nothing ever happened to it. By the time I reach the office the dripping stops completely, so I do not know if I should worry or not. Since I am the kind of person who likes to understand things, I started reading about how the exhaust works. I learned that the gases from the engine travel through the manifold, then the catalytic converter, then the middle pipe and finally the muffler, and the water is made when fuel burns, so it can collect inside the pipe when the car is cold. That sounds believable to me. But then I also read that if the water has a strange smell, or if the smoke is thick and stays for a long time, it can mean a different problem. Mine smells a bit sharp, but I cannot tell if that is normal or not, because I never paid attention before. There is also a small rattling noise from under the car when I switch off the engine, and I think the muffler end looks darker and rustier than before. One of the pages I read was from a workshop in Mussafah that explained exhaust parts in plain words, and it said rust, leaks and loose hangers are common reasons for noise. It made me think maybe my rattle is just a loose bracket, but I am only guessing. Last month I heard from a colleague that when the school fees come and the car needs a repair, people start looking for Affordable exhaust repair for Infiniti in Khalifa City (https://infinitiservicemussafah.ae/exhaust-repair/), and I laughed at that, because now I am also thinking about the same thing in case my pipe needs work soon. I do not want to spend money without knowing what is really wrong. So I wanted to ask, how do you tell the difference between normal water and a real problem? Is the smell a good clue? Can a small hole in the pipe stay hidden for a long time, and does it cause the engine to use more fuel? Also, if the rattling is only a loose part, is that a quick job or do they usually find more things once they lift the car? One more thing, my friend says short trips are bad for the exhaust because the water never dries out and the metal rusts from inside. Is that true? I mostly drive about ten minutes to work, so maybe I am making it worse without knowing. If anyone has experience with this, please tell me what you noticed first and how long it took before you needed a repair. Even a simple tip, like what to look at under the car, would help me a lot. Thanks for reading.