Muffler Repair & Replacement Cost in 2026
$100 – $800
Muffler replacement costs $300 to $800 installed for most cars ($100–$300 for the part, 1–2 hours of labor). Small exhaust leaks and hanger repairs run $100–$300. Performance mufflers and stainless systems cost $800–$1,500.
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Exhaust repair cost by job
| Repair type | Cost (USD) |
|---|---|
| Exhaust leak patch / weld | $100 – $300 |
| Hanger or clamp replacement | $50 – $150 |
| Muffler replacement (standard) | $300 – $800 |
| Performance muffler (installed) | $500 – $1,500 |
| Full cat-back exhaust system | $800 – $2,000 |
What affects the price
- Rust condition — on rust-belt cars, seized bolts and corroded pipes add labor time.
- Weld vs clamp — welded installations last longer; clamp-on is cheaper and DIY-friendly.
- Part material — aluminized steel is standard; stainless steel costs 30–50% more but outlasts the car.
- What else failed — muffler problems often accompany bad pipes, flex joints, or catalytic converter issues.
Symptoms of a bad or failing muffler
- Exhaust noticeably louder than normal
- Rattling or vibration from under the car
- Visible rust, holes, or a hanging exhaust pipe
- Hissing or roaring sound that changes with engine RPM
- Drop in fuel economy
- Exhaust smell inside the cabin
Frequently Asked Questions
What are the signs of a bad muffler?▾
A louder-than-normal exhaust, rattling from underneath, visible rust holes, and reduced fuel economy. A hissing or roaring leak usually means a hole or failed gasket.
Is it illegal to drive with a loud exhaust?▾
Most states have noise limits (often ~95 dB) and require a functioning muffler. A rusted-out muffler can also fail state inspection.
Can I replace a muffler myself?▾
On cars with clamp-on systems, yes — it's a 1–2 hour DIY job with jack stands. Welded systems and rusted hardware are best left to a shop.
How long does a muffler last?▾
Typically 5–7 years, less in rust-belt states where road salt accelerates corrosion. Short trips (condensation in the exhaust) also shorten muffler life.
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All prices are estimated US national averages for 2026 (parts + labor) and are provided for informational purposes only. Actual quotes vary by vehicle, region, and shop.