Exhaust System Repair

Muffler, catalytic converter, exhaust pipe, and manifold repair.

Exhaust System Repair

Your exhaust system does more than keep your car quiet — it routes harmful gases away from the cabin, reduces emissions, and helps your engine run efficiently. We inspect and repair every component from the exhaust manifold to the tailpipe, including catalytic converters, mufflers, resonators, O2 sensors, and exhaust gaskets. Whether you hear a loud rumble, smell exhaust fumes, or failed an emissions test, we'll get your system sealed up and running clean.

Why Exhaust Problems Require Prompt Attention

An exhaust leak is more than a noise nuisance. Leaking exhaust gases contain carbon monoxide — an odorless, dangerous gas that can enter your cabin through gaps in the system. Exhaust leaks upstream of the catalytic converter also cause your engine to run inefficiently, reducing fuel economy and potentially triggering a check engine light. A failing exhaust system can also cause your vehicle to fail a required emissions inspection.

Complete Exhaust Services

Our experienced technicians handle every type of exhaust repair. We replace worn mufflers and resonators, repair or replace catalytic converters, fix exhaust manifold leaks and gaskets, replace rusted pipes and flex joints, and diagnose O2 sensor issues. We visually inspect the entire exhaust system from manifold to tailpipe, checking for rust, holes, loose hangers, and damaged components. Every repair uses quality parts to ensure long-lasting results.

Exhaust & Muffler Repair in San Francisco

San Francisco's salty marine air accelerates rust on exhaust pipes, mufflers, and hangers, and California's strict emissions standards mean a leaking exhaust or bad catalytic converter can keep you from passing your smog check. If your vehicle is louder than usual, smells like exhaust, or recently failed a smog test, bring it to our SoMa shop. We'll diagnose the problem, explain your options, and get your exhaust system working quietly and cleanly again.

What's Included

Muffler repair and replacement
Catalytic converter service
Exhaust manifold and gasket repair
Exhaust pipe and flex joint replacement
O2 sensor replacement
Exhaust hanger and bracket repair

Signs You May Need Exhaust System

Loud rumbling or roaring noise from under the vehicle
Rattling or vibrating sounds, especially at idle
Smell of exhaust fumes inside the cabin
Decreased fuel efficiency
Failed emissions inspection

Why Choose Auto City Repair for Exhaust System

Complete exhaust system inspection from manifold to tailpipe
Quality parts for long-lasting repairs
experienced technicians experienced with all exhaust systems
Help your vehicle pass its emissions inspection

Frequently Asked Questions

Why is my car so loud all of a sudden?

A sudden increase in exhaust noise usually means a hole, crack, or disconnected joint somewhere in the exhaust system. Common causes include rust-through on mufflers or pipes, a cracked exhaust manifold, or a failed gasket. We'll inspect the system and pinpoint the source.

Can a bad exhaust system affect my gas mileage?

Yes. Exhaust leaks, especially those before the catalytic converter, can cause your engine to run rich (using more fuel than necessary) and reduce overall fuel efficiency. A properly sealed exhaust system helps your engine run at peak efficiency.

Will you help me pass emissions if my exhaust is the problem?

Absolutely. If your exhaust system is causing an emissions inspection failure, we'll diagnose and repair the issue so your vehicle can pass and get back on the road with a clean bill of health.