The cost of a muffler repair depends on what is wrong with the muffler, but it may range from as little as $30 to a couple of thousand, as of April 2015. Minor repairs, such as fixing a loose muffler, has an average cost of about $140.
If a muffler replacement is needed, the price rises, and it may range from about $75 to over $700. The difference in price depends on the type of vehicle, parts and labor costs. If the muffler and parts of the exhaust system are replaced, an individual can expect to spend more than $1,000 and up to $2,500 or more, especially if the catalytic converter needs to be replaced.