What must every motor vehicle be equipped with?

Every motor vehicle in North Carolina is required to be equipped with a muffler. The purpose of the muffler is to reduce the noise produced by the engine and exhaust system, which is important for minimizing noise pollution and ensuring compliance with local noise regulations. A properly functioning muffler helps to control emissions and enhances the overall efficiency of the vehicle's exhaust system.

While features such as 4-ply tires, mudguards, and shoulder harnesses are important for vehicle safety and performance, they do not carry the same legal requirement for all motor vehicles as a muffler does. For example, tire specifications may vary based on the type of vehicle and its intended use, and while mudguards and shoulder harnesses contribute to safety, they are not mandated for every motor vehicle in the same way that a muffler is required by law.