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Car Auto Repairs of Texas

San Marcos, Hays County

Best Exhaust & Catalytic Converter Repair in San Marcos, Texas

Quick answer

For fast, honest exhaust & catalytic converter repair in San Marcos, call 469-402-3923. Typical cost: $150 – $450 muffler · $900 – $2,500 catalytic converter. Our ASE-certified technicians offer same-day appointments, written estimates, and a 12-month / 12,000-mile warranty — open 8 AM to 11:45 PM daily.

Same-day appointments, typically within 2–4 hours

Call 469-402-3923

Loud exhaust, rattles, failed emissions, and catalytic converter replacement. The inspection focuses on exhaust leak inspection, muffler and pipe replacement, flex pipe and hanger repair. For drivers in San Marcos, including Texas State University and Downtown Square and Aquarena Springs, note when the symptom starts and whether it changes during your usual journey.

Exhaust, Muffler & Catalytic Converter Repair for San Marcos drivers

A loud exhaust, rotten-egg smell, rattling under the car, or a P0420 code usually means an exhaust leak or failing catalytic converter. We repair and replace mufflers, pipes, flex joints, O2 sensors, and catalytic converters — including theft replacements.

Car Auto Repairs of Texas serves San Marcos drivers from Texas State University, Downtown Square, Aquarena Springs and across ZIP codes 78666. Whether you drive a commuter sedan, a family SUV, or a work truck for your business, we handle exhaust & catalytic converter repair for personal and fleet vehicles throughout Austin & Central Texas.

Inspection in focus

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Illustration of a technician using a diagnostic scanner

Computer diagnostics

A fault code identifies a system to investigate, not necessarily a part to replace.

Illustration of a battery tester connected to car battery terminals

Battery testing

Battery testing is one part of investigating starting and charging concerns.

Illustration of a technician inspecting a vehicle on a lift

Hands-on inspection

A hands-on inspection helps connect the driver's symptoms with the vehicle's condition.

Illustrative images, not customer repair photographs.

What's included in our San Marcos exhaust & catalytic converter repair

  • Exhaust leak inspection
  • Muffler and pipe replacement
  • Flex pipe and hanger repair
  • Oxygen sensor replacement
  • Catalytic converter replacement (EPA-compliant)

Exhaust & Catalytic Converter Repair cost in San Marcos, TX

$150 – $450 muffler · $900 – $2,500 catalytic converter

Prices vary by year, make, and model. You'll get a written estimate before any work starts.

Exhaust & Catalytic Converter Repair in San Marcos: common questions

Exhaust & Catalytic Converter Repair in San Marcos typically costs $150 – $450 muffler · $900 – $2,500 catalytic converter. Your exact price depends on the vehicle; Car Auto Repairs of Texas provides a written estimate first.

Car Auto Repairs of Texas serves San Marcos and nearby Texas State University and Downtown Square with ASE-certified technicians and same-day appointments. Call 469-402-3923.

Usually, yes. Same-day appointments, typically within 2–4 hours, and we're open until 11:45 PM every day.

Rotten-egg smell, sluggish acceleration, rattling, a P0420/P0430 code, or failing emissions testing.

If your car suddenly sounds extremely loud on startup, it may have been cut out. We replace stolen converters quickly.

Not for long — leaks can let carbon monoxide into the cabin. Get it inspected promptly.

Exhaust & Catalytic Converter Repair near San Marcos neighborhoods

Exhaust & Catalytic Converter Repair in nearby cities

Other auto repair services in San Marcos

Learn more about exhaust, muffler & catalytic converter repair · All San Marcos services

Helpful exhaust & catalytic converter repair guides

How to Tell If Your Catalytic Converter Is Bad

Symptoms, codes, tests, and replacement costs for failing catalytic converters.

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Book exhaust & catalytic converter repair in San Marcos today

Call now for a free quote and same-day service across Texas.

Call 469-402-3923