Exhaust noise is a common problem inside cars. It can be a nuisance because it can make it difficult to sleep, work, or play. It can also be a safety hazard because it can make it difficult to hear other drivers and pedestrians. There are several ways to reduce exhaust noise inside a car. One way is to install an exhaust system that filters out the noise. Another way is to install a soundproofing material in the car. A third way is to install an air conditioning system that filters out the noise. The best way to reduce exhaust noise inside a car is to find out what type of noise it is and try different methods of reducing it.