Many people confuse the muffler and exhaust on cars to be the same part, but the two pieces serve different purposes. The exhaust is responsible for controlling the output. The muffler determines how much noise the exhaust makes as the car is in motion. Both the exhaust and muffler help dampen the emissions that are released from the vehicle and are constructed of steel and aluminum, which offers protection when the heat from the chemicals that are emitted from the car's exhaust.
The law requires each vehicle on the road to have a muffler installed because it helps to slow down the engine. The average lifespan of mufflers is six years. The lifespan is determined by potholes, speed bumps, and exposure to salt that is present on the roads. The average cost of replacing this part is $800. Exhausts last five years and range from $300 to $1,200.
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