Everyone benefits from vehicle exhaust systems, both drivers and non-drivers alike. The system works within your vehicle to minimize air and noise pollution by converting harmful gases into less harmful ones and by dulling the noises emitted from your car. If you’ve ever been driving behind a car that smells like sulfur and has a cloud of smoke around it, you know how beneficial exhaust systems are. There are three main components to an exhaust system including a catalytic converter, a muffler, and a tail pipe. The catalytic converter is responsible for converting harmful gases, like carbon monoxide, into less harmful ones. Cars that have a sulfuric smell coming from their exhaust pipe have a faulty catalytic converter. Mufflers, on the other hand, dampen engine noise and change its tone. Malfunctioning mufflers will cause rattling noises or blowing noises if there is a hole. Finally, the tail pipe is responsible for directing the gases away from the engine and out of the rear of the vehicle. Most exhaust problems will not directly affect the drivability of your vehicle, but because cars emit dangerous gases, it is important to stay on top of repairs.