There are a few ways to make a car engine quieter. One way is to use a muffler. A muffler is a piece of metal, plastic, or other material that is put over the exhaust pipe and used to reduce the noise made by the engine. Another way to make a car engine quieter is to use air filters. Air filters are pieces of metal, plastic, or other material that are placed over the air intake and used to reduce the noise made by the engine.
