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If your normally quiet vehicle has started roaring like a race car, the muffler is the first thing to check on. Part of the vehicle's exhaust system, the muffler minimizes noise produced by the engine, and escorts exhaust out of the car. Most drivers don't give much thought to the muffler until it starts to fail. When it's time for a new muffler, your Kia dealer in Frederick, MD, can help. 5 Signs That Your Muffler Is Failing 1.    Your Car Is a Lot Louder Loud or strange noises are one of the first signs of muffler trouble. A suddenly louder vehicle may have a muffler with a hole, requiring immediate repair or replacement. Rattling noises may indicate that your muffler has come loose, broken, or cracked. Every once in a while, turn your car radio down and listen to how your vehicle sounds. Be prepared to act if anything sounds unusual or different. It's important to schedule a service appointment as soon as you notice that the muffler is acting up. If left untreated, a faulty muffler could damage other parts of the vehicle's exhaust system. 2.    You Notice Puddles and Rust Wet conditions and road salt can cause your muffler to corrode. If your muffler is visibly rusted or has pinholes, it may be due for replacement. Rust can reduce the effectiveness of the muffler, making your car noisier and allowing exhaust fumes to make their way into the cabin. 3.    Your Vehicle Seems Less Fuel Efficient A well-functioning muffler improves your vehicle's fuel economy by efficiently removing exhaust. If you seem to be making more frequent trips to the gas station, replacing your muffler should better filter your exhaust and help improve your vehicle's overall fuel economy. 4.    Your Vehicle Vibrates While in Operation A vehicle that vibrates noticeably may need muffler service. When a muffler is declining, it may not be able to cushion against the vibrations and noise coming from the exhaust system. Strong vibrations can also be a sign of other vehicular issues, including tire problems. The factory-trained technicians in our service department can help diagnose the problem and perform the proper repair. 5.    You Notice a Bad Smell While Driving One of the primary functions of a muffler is to filter harmful fumes and gases out of the vehicle. If your muffler isn't doing its job, those fumes may build up in your vehicle's cabin. Inhaling these fumes can be dangerous, so you'll want your muffler checked out immediately. A faulty muffler affects your vehicle's safety and performance, so it's important to act if you notice signs of trouble. When you're ready to schedule your next service appointment, call DARCARS Kia of Frederick.