How Much Does It Cost to Replace the Exhaust on a Honda Civic?

For most Honda Civics in the U.S., expect $250–$900 to replace a muffler or rear section, $450–$1,200 for a full cat-back, and $1,200–$3,500+ if the catalytic converter or exhaust manifold is involved. Prices vary by model year, engine, emissions rules (CARB vs. Federal), rust, and whether you choose OEM or aftermarket parts. Below is a detailed breakdown to help you budget realistically in 2025.

What “exhaust replacement” can mean on a Civic

“Exhaust replacement” can refer to anything from a simple muffler swap to replacing the manifold with an integrated catalytic converter. Understanding which section failed is key to estimating cost.

• Muffler or axle-back: Rear-most section that controls noise.
• Mid-pipe/resonator: Central pipe that reduces drone and connects sections.
• Cat-back: Everything from the catalytic converter back (pipes, resonator, muffler).
• Front pipe/flex pipe: Section near the engine that absorbs movement.
• Exhaust manifold with catalytic converter: On many Civics, the converter is built into the manifold.
• Oxygen (O2) sensors and hardware: Often replaced when disturbed or seized.

Pinpointing which of these components needs work will narrow your price range and prevent overpaying for parts you don’t need.

Typical price ranges (parts + labor, U.S., 2025)

These estimates reflect common national pricing and labor rates ($100–$180/hr). Costs can run higher in high-cost metro areas or heavily rusted “salt-belt” regions.

• Muffler/axle-back: $180–$450 aftermarket; $350–$750 OEM; 0.6–1.2 labor hours.
• Mid-pipe/resonator: $250–$600; 0.8–1.5 hours.
• Cat-back system: $450–$1,200 aftermarket; $900–$1,600 OEM; 1.0–2.0 hours.
• Front pipe/flex pipe: $300–$800; 1.0–2.0 hours.
• Exhaust manifold with catalytic converter (Bank 1): $900–$2,500 aftermarket; $1,500–$3,500+ OEM; 2.5–5.0 hours.
• Secondary/underbody catalytic converter (if equipped): $700–$1,800; 1.0–2.5 hours.
• O2 sensors: $120–$300 each, depending on brand and location.
• Hardware, hangers, gaskets: $25–$120; rusted fasteners can add $50–$200.
• Shop fees/taxes: Typically 5–15% added to the invoice.

If multiple sections are rusted together, expect both parts and labor to climb because cutting and custom sleeves or welding may be required.

What drives the price up or down

Small details often make a big difference in exhaust costs, especially on older or high-mileage Civics.

• Model year and engine: Some Civic generations have the catalytic converter integrated into the manifold, which is costlier.
• Rust/corrosion: Salt-belt cars mean seized bolts, cracked flanges, and extra labor.
• OEM vs. aftermarket: OEM fits and lasts well but costs more; quality aftermarket can save 20–50%.
• Emissions certification: CARB-compliant cats (CA, NY, etc.) are pricier than Federal/EPA-only units.
• Labor rate: Urban dealer rates can exceed $180/hr; independents and muffler specialists are usually lower.
• One-piece vs. modular design: Some sections can’t be separated without cutting.
• Add-ons discovered mid-job: O2 sensors, gaskets, hangers, and clamps often need replacement once disturbed.
• Theft or impact damage: Converter theft and road debris can damage multiple sections at once.
• Performance upgrades: Cat-back or axle-back systems for Si/Type R cost more than base trims.
• Parts availability: Backorders or limited inventory can raise prices temporarily.

Confirm your state’s emissions rules and your car’s exact trim/engine code before ordering parts to avoid returns or failed inspections.

Real-world ranges by Civic generation

The figures below reflect typical parts-and-labor totals for common repairs. Actual quotes vary by condition and location.

• 2001–2005 (7th gen): Muffler $200–$400; cat-back $500–$900; manifold/cat $1,200–$2,400 (Federal), up to $3,000 (CARB).
• 2006–2011 (8th gen, 1.8L R18): Integrated manifold/cat $1,400–$3,200; mid-pipe $300–$600; muffler $220–$450.
• 2012–2015 (9th gen): Muffler $230–$500; cat-back $550–$1,100; manifold/cat $1,300–$3,000 depending on emissions spec.
• 2016–2021 (10th gen, incl. 1.5T/Si/Type R): Front pipe/cat $900–$2,200; underbody cat (if equipped) $700–$1,500; muffler $300–$700; performance cat-backs $900–$2,000 parts only.
• 2022–2025 (11th gen): Muffler $300–$700; cat-back $700–$1,400; converter section $1,200–$3,200+ (CARB at the higher end).

Sport, Si, and Type R trims can carry a premium for unique piping diameters, valved mufflers, or performance-grade materials.

Can you drive with a bad exhaust?

An exhaust leak can let carbon monoxide into the cabin, trigger a check engine light, fail a state inspection, and violate local noise laws. If the catalytic converter is compromised, you may also exceed emissions limits and risk fines or failed tests. Drive only short distances to a shop if you suspect a leak, and avoid highway speeds if parts are hanging or rattling.

How to budget and save

A few proactive steps can keep your bill in check while ensuring a safe, compliant repair.

• Get 2–3 written quotes with part numbers and labor hours itemized.
• Ask for both OEM and quality aftermarket options; consider stainless steel where possible.
• Verify emissions compliance (CARB vs. Federal) for your state to avoid failing inspection.
• Bundle new gaskets, hangers, and any suspect O2 sensors to reduce future labor.
• In rust-prone regions, budget extra labor for seized hardware; ask for a worst-case estimate.
• Check for coupons or off-peak scheduling at muffler specialists.
• If your converter failed early, check emissions warranty: many cats and ECUs carry 8yr/80,000-mile federal coverage; some states have additional protections.
• Consider an anti-theft shield if replacing a stolen catalytic converter.

Choosing a reputable independent shop or muffler specialist often strikes the best balance between cost, quality, and turnaround time.

DIY vs. professional

DIY can save labor costs but involves safety and fitment risks, especially on rusted cars.

• Tools: Penetrating oil, breaker bar, reciprocating saw/angle grinder, O2 sensor socket, torque wrench, jack stands/ramps.
• Fitment: Test-fit all sections; use new gaskets and align to prevent rattles and drone.
• Sensors: Use anti-seize on O2 sensor threads (not on tips) and avoid twisting sensor wires.
• Sealing: Use proper clamps or welds; exhaust leaks can trigger codes and inspections failures.
• Safety: Support the vehicle securely and wear eye/respiratory protection when cutting rusty pipes.

If you lack welding tools or encounter seized studs at the manifold, professional help is advisable to avoid costly damage.

Red flags to watch for

Some practices can lead to legal or reliability issues.

• Non-CARB catalytic converters installed in CARB states (e.g., CA, NY) — likely to fail inspection.
• Recommendations to “delete” emissions equipment — illegal for street use.
• Quotes without part numbers, emissions certification, or warranty details.
• Prices that seem far below market for catalytic converters — potential counterfeit or poor quality.
• Unnecessary upsells far from the identified leak or failure point.

Insist on documented parts, compliance labels for converters, and clear warranty terms before approving work.

Bottom line

For a Honda Civic, a straightforward muffler or rear-section replacement typically runs $250–$900, a full cat-back $450–$1,200 (aftermarket), and anything involving the catalytic converter or manifold $1,200–$3,500+. Your exact total depends on the model year, emissions requirements, rust, and parts choice. Get multiple itemized quotes and confirm emissions compliance to avoid surprises.

Summary

Most Civic exhaust repairs are a few hundred dollars for rear sections and $1,200–$3,500+ when the converter/manifold is involved. Factors like CARB compliance, rust, and OEM vs. aftermarket parts drive variability. Obtain multiple quotes, verify emissions requirements, and budget for ancillary items (gaskets, O2 sensors) to keep the repair compliant, durable, and cost-effective.

How much does it cost to replace a whole exhaust system?

Replacing an entire exhaust system can cost anywhere from $500 to over $3,000, with basic systems often falling in the $500 to $1,500 range, and more complex replacements on luxury or high-performance vehicles potentially reaching $3,000 or more. The final price depends on your vehicle’s make and model, the quality of the parts, the labor rates in your area, and the specific components that need replacing, such as the catalytic converter, muffler, or exhaust manifold, which can significantly increase costs. 
Factors influencing cost:

• Vehicle make and model: High-end, luxury, or high-performance vehicles, as well as less common models, generally have more expensive parts and can increase the total cost. 
• Components needed: The exhaust system is made up of multiple parts, and the cost depends on which ones need to be replaced. This includes: 
  • Catalytic converter: Often a very expensive component. 
  • Muffler and resonator: Generally less expensive than catalytic converters, though quality parts can still cost $150–$250 each. 
  • Exhaust manifold: A complex and costly part to replace. 
  • Pipes and hangers: Basic pipes and hangers are less expensive. 
• Labor costs: The cost of labor to remove old parts and install new ones will vary depending on your location and the complexity of the job. 
• Customization: Custom, high-performance exhaust systems with features like headers or high-flow converters will be more expensive than stock replacements. 

How to get an accurate estimate:

• Contact local shops: The most accurate way to determine the cost is to take your vehicle to a reputable local exhaust or auto shop. 
• Provide details: Be prepared to provide the shop with your vehicle’s year, make, and model to help them give you an accurate quote. 
• Compare quotes: Get estimates from a few different shops to compare prices and ensure you’re getting a fair deal. 

Is it worth replacing the exhaust on an old car?

Absolutely. Most cars today have a catalytic converter, and two mufflers (one in the middle and one at the rear), all muffling or creating back pressure on the engines ability to expel the burnt gases. Replace it all with a performance exhaust and you can beef up the power by 5–10% and maybe more!

Is it expensive to replace an exhaust?

The estimated cost for a complete exhaust system replacement is around $500 to $1000, depending on local labor rates. I have found new exhaust manifolds and pipes available on online marketplaces, in case the entire system needs replacement. It would be wise to compare prices with local exhaust shops as well.

How much does it cost to replace a muffler on a 2015 Honda Civic?

The average cost for a Honda Civic Exhaust Muffler Replacement is between $545 and $598.