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Is a car exhaust expensive to fix?

Repairs can range from under $100 for minor leaks to several thousand dollars for catalytic converter replacement. This article explains why costs vary, what to expect from common repairs, and tips to save money.


Common repairs and typical costs


The following items are the components most often involved in exhaust repairs, with typical price ranges and what drives the cost.



  • Muffler replacement: Parts typically $100–$300; labor usually $75–$150 per hour. Most repairs total about $200–$600, though a full system replacement can run higher.

  • Catalytic converter replacement: A major cost driver. Parts typically $400–$2,000; labor $100–$500. Total commonly $900–$2,500, with higher prices for luxury or OEM units.

  • Exhaust pipe repair or patch: Leaks at joints or rusted pipes may be fixed with clamps, patches, or welding. Parts $10–$150; labor $100–$250. Total typically $150–$400.

  • Exhaust manifold gasket replacement: Gasket itself is inexpensive ($20–$100), but labor can be significant if the manifold must be removed. Gasket-only repairs often $300–$800; replacing the manifold itself can run $1,000–$2,000 depending on the engine.

  • Oxygen sensor replacement: Sensor parts $50–$150 each; labor $50–$150. Typical total $150–$350 per sensor, with higher costs if multiple sensors are replaced.


Prices vary by vehicle, shop, and region, and some repairs require more extensive labor due to design or corrosion. Warranties or recalls may apply in certain cases.


What factors affect the price


Several factors determine how much you’ll pay for exhaust work beyond the part cost itself. Regional differences and vehicle specifics can dramatically shift final numbers.



  • Vehicle make/model and parts availability: Some cars have expensive OEM parts or scarce service parts.

  • Labor rates and time: Shop hourly rates differ, and some repairs require extensive labor due to access or engine layout.

  • OEM vs aftermarket parts: Aftermarket parts are usually cheaper, but OEM parts may be required for certain warranties or fitment.

  • Extent of rust or corrosion: Severe corrosion can necessitate more labor or a full system replacement.

  • Emissions warranties and recalls: Depending on the vehicle, some components may be covered by manufacturer or government programs; check with the dealer.

  • Diagnosis and inspection charges: Many shops bill for diagnosis if no repair is performed.


These factors can dramatically alter the final cost, so it’s important to obtain itemized estimates that separate parts and labor.


Tips to save money and stay safe


Before you commit, consider strategies to reduce costs while ensuring the job is done correctly. A leaking exhaust can pose a carbon monoxide risk, so address issues promptly.



  • Get multiple quotes from independent shops and ask for itemized estimates, including parts and labor.

  • Ask about OEM versus aftermarket parts and whether warranties apply; sometimes aftermarket parts carry the same warranty at a lower price.

  • Repair only what’s necessary: small leaks or faulty sensors may be cheaper to fix than replacing large sections.

  • Check for emissions warranties, recalls, or service campaigns that might cover part or all of the repair.

  • Inquire about payment plans or financing for expensive parts such as catalytic converters.

  • Consider salvage-yard parts for older vehicles if reliability and compatibility are suitable, weighing safety and reliability considerations.

  • Maintain the system to prevent future problems: regular inspections, addressing leaks early, and using quality components.


Always confirm fit and compatibility before purchasing parts, and prioritize safety—a well-installed exhaust system protects performance, efficiency, and occupant health.


Summary


The cost to fix a car’s exhaust varies widely. Minor fixes and sensor replacements are usually affordable, while catalytic converters drive the biggest price tag. Expect a few hundred dollars for simple repairs and several thousand for major component replacements, especially on older or high-mileage vehicles. Getting multiple quotes, understanding the breakdown between parts and labor, and checking for warranties can help manage costs while keeping your vehicle safe and compliant with emissions rules.

Are exhausts expensive to fix?


The cost of an exhaust repair can vary a LOT depending upon what they're doing to fix the leak, and how big the leak is. It can range from as cheap as $10 for something DIY like this or this, to as much as several thousand to completely replace the exhaust system from the manifold back.



Is fixing exhaust worth it?


If the rust is limited to one small area, repair is smart. But if you see multiple weak spots or flaking metal, replacement will save you future headaches.



How much does it cost to fix a car exhaust?


Car exhaust repair costs vary widely depending on the repair, from simple patches costing under $100 to full replacements that can range from $900 to over $2,500. Costs depend on the specific part being repaired or replaced, the extent of the damage, and the vehicle's make and model. A basic weld on a small crack might be under $100, while a catalytic converter replacement can be several hundred to over a thousand dollars on its own.
 
Cost breakdown by repair type

  • Minor repairs (welding/patching): Can cost from approximately $75 to $150 for welding a small crack or leak. Some temporary fixes, like using a heat wrap kit, might cost as little as $12 but are often not permanent. 
  • Muffler replacement: Averages around $175 to $450, which includes parts and labor. 
  • Catalytic converter replacement: This is a more expensive job, with the cost for the part and labor typically falling between $600 and $1,800 or more, depending on the vehicle. 
  • Exhaust manifold gasket replacement: Costs roughly $250 to $600, with most of the price being labor. 
  • Full system replacement: The most comprehensive option, which can cost anywhere from $900 to over $2,500 depending on the vehicle and parts needed. 

Factors that influence the cost
  • Vehicle make and model: Parts and labor for luxury or high-performance vehicles will be significantly more expensive than for a common economy car. 
  • Extent of damage: A single damaged component is cheaper to fix than a system with multiple problems. Sometimes, what seems like a small issue can reveal more damage once a mechanic starts working on it, leading to a higher final bill. 
  • Labor rates: The cost of labor varies by shop and location. It can add a substantial amount to the total cost, especially for complex jobs. 
  • Parts quality: The brand and quality of parts can affect the price. High-end or performance parts will cost more than standard, stock parts. 



Can you still drive with a bad exhaust?


You shouldn't drive your vehicle with a damaged exhaust system. Doing so is not safe and could have a negative effect on your pocket and your health.


Kevin's Auto

Kevin Bennett

Company Owner

Kevin Bennet is the founder and owner of Kevin's Autos, a leading automotive service provider in Australia. With a deep commitment to customer satisfaction and years of industry expertise, Kevin uses his blog to answer the most common questions posed by his customers. From maintenance tips to troubleshooting advice, Kevin's articles are designed to empower drivers with the knowledge they need to keep their vehicles running smoothly and safely.