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New car owners struggle with the question, “What are the symptoms of a bad muffler?” Knowing these signs informs you when to replace or fix faulty mufflers and avoid high repair costs, and get a longer engine lifespan.

  1. Noisy Muffler: The clearest answer to the question "What are the symptoms of a bad muffler?" is loud roaring noises from the muffler. A muffler can get damaged from debris when driving in bad road conditions. You might notice thumping, clanking, and stifling noises in your exhaust system if the muffler is bad. However, it is worth noting whether your state prohibits modifying exhaust systems before getting heavy fines.
  2. Decreased Fuel Efficiency: A bad muffler restricts your exhaust’s flow, which in turn stresses your engine. As a result, the engine's performance decreases and the fuel efficiency drops. There might be an issue with your muffler if you observe a drop in the mileage per gallon of fuel.
  3. Foul Smell: A new muffler filters gases and fumes from the exhaust and prevents them from being released to the car. However, the leaks in a bad muffler make it impossible to filter these gases, thereby releasing them into the car. New mufflers are necessary, as these gases have serious health effects.
  4. Rusting: Extensive rusting is an indication of a faulty muffler. Short trips do not allow exhaust systems to heat up enough, leading to the formation of water deposits. Water in the exhaust reacts with oxygen, causing it to rust.

Have more questions about what are the symptoms of a bad muffler? Contact our ASE Certified Technicians at Clausen Automotive, The Hybrid Shop, for more information about exhaust systems and to schedule an appointment. Since 1975, our family-owned auto shop has proudly served vehicle owners in Madison, WI, and the surrounding communities.

About the Author

Steve Clausen

Owner & ASE Master Technician – Clausen Automotive, Madison, WI

Steve Clausen, a Certified ASE Master Technician, has been serving Madison drivers with reliable auto repair and maintenance for over 30 years. As the owner of Clausen Automotive, he is committed to honest service, high-quality workmanship, and staying updated with the latest auto technologies. His dedication ensures local customers receive trustworthy care for their vehicles.

View Steve’s Full Profile →

What are the symptoms of a bad muffler? If you need more information about the exhaust systems, call the auto experts at Clausen Automotive.

New car owners struggle with the question, “What are the symptoms of a bad muffler?” Knowing these signs informs you when to replace or fix faulty mufflers and avoid high repair costs, and get a longer engine lifespan.

  1. Noisy Muffler: The clearest answer to the question "What are the symptoms of a bad muffler?" is loud roaring noises from the muffler. A muffler can get damaged from debris when driving in bad road conditions. You might notice thumping, clanking, and stifling noises in your exhaust system if the muffler is bad. However, it is worth noting whether your state prohibits modifying exhaust systems before getting heavy fines.
  2. Decreased Fuel Efficiency: A bad muffler restricts your exhaust’s flow, which in turn stresses your engine. As a result, the engine's performance decreases and the fuel efficiency drops. There might be an issue with your muffler if you observe a drop in the mileage per gallon of fuel.
  3. Foul Smell: A new muffler filters gases and fumes from the exhaust and prevents them from being released to the car. However, the leaks in a bad muffler make it impossible to filter these gases, thereby releasing them into the car. New mufflers are necessary, as these gases have serious health effects.
  4. Rusting: Extensive rusting is an indication of a faulty muffler. Short trips do not allow exhaust systems to heat up enough, leading to the formation of water deposits. Water in the exhaust reacts with oxygen, causing it to rust.

Have more questions about what are the symptoms of a bad muffler? Contact our ASE Certified Technicians at Clausen Automotive, The Hybrid Shop, for more information about exhaust systems and to schedule an appointment. Since 1975, our family-owned auto shop has proudly served vehicle owners in Madison, WI, and the surrounding communities.

About the Author

Steve Clausen

Owner & ASE Master Technician – Clausen Automotive, Madison, WI

Steve Clausen, a Certified ASE Master Technician, has been serving Madison drivers with reliable auto repair and maintenance for over 30 years. As the owner of Clausen Automotive, he is committed to honest service, high-quality workmanship, and staying updated with the latest auto technologies. His dedication ensures local customers receive trustworthy care for their vehicles.

View Steve’s Full Profile →

Steve Clausen
Clausen AutomotiveAuto Repair Shop in Madison, WI

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2118 S. Stoughton Rd., Madison, WI 53716608-221-8321Service@ClausenAutomotive.com
Mon:07:00am - 05:30pm
Tue:07:00am - 05:30pm
Wed:07:00am - 05:30pm
Thu:07:00am - 05:30pm
Fri:07:00am - 05:30pm
Sat:Closed
Sun:Closed
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