National Budget Muffler is an Auto Repair Shop in Bel Air, Harford County MD, we take pride in our high quality work, integrity, and reasonable costs. In Harford County, there are three muffler shops: one each in Joppa, Bel Air, and Havre de Grace. We therefore operate a muffler shop close to you no matter where you are in Harford County or even northern Baltimore County. We offer service while you wait for the majority of repair jobs. You're welcome to drop off your car if it need more extensive repairs.