Mr Automotive
Repair — Gainesville, GA
Winder, GA · Barrow County

Exhaust Repair in Winder, GA

From $99 · 1–3 hours · 12-month / 12,000-mile warranty

Starting From
$99
Service Time
1–3 hours
Warranty
12-month / 12,000-mile
Open
Mon–Fri 8:00 AM – 6:00 PM

Most exhaust repairs at Mr Automotive Repair run between $99 and $800 depending on what's failed and how far the damage has spread — and I'll give you a straight answer on that before we touch anything. I'm Mike Harrington, lead technician here at our shop on Memorial Park Dr in Gainesville, GA, and I've been diagnosing exhaust systems long enough to know that a small rust hole can become a full system replacement if it's ignored through a Georgia summer. What I tell every customer is this: catch it early, fix it right, and you won't be back for the same problem. All our exhaust work is backed by a 12-month/12,000-mile warranty and performed by ASE Certified technicians.

TL;DR
  • Exhaust repairs start at $99 — catch problems early to avoid bigger costs.
  • Georgia emissions failures often trace back to exhaust system leaks.
  • All work is ASE Certified with a 12-month/12,000-mile warranty.

What's Included

  • Full visual and audible inspection of the exhaust system from manifold to tailpipe
  • Check for exhaust leaks at manifold gaskets, flex pipes, and pipe joints
  • Catalytic converter function assessment and OBD-II scan for related fault codes
  • Inspection of oxygen sensors for damage or contamination caused by exhaust leaks
  • Muffler integrity check including internal baffle evaluation
  • Exhaust hanger and bracket inspection for cracks or separation
  • Repair or replacement of failed components including pipes, gaskets, flex sections, and mufflers
  • Post-repair road test and exhaust backpressure check to confirm proper flow

Signs Your Exhaust System Needs Attention

  • A loud rumbling, hissing, or rattling noise that gets worse when you accelerate
  • A sulfur or rotten egg smell inside or outside the vehicle while running
  • Exhaust fumes noticeable inside the cabin, especially at idle or low speeds
  • A check engine light paired with poor fuel economy or rough running
  • Visible rust, holes, or hanging sections under the vehicle
  • Your vehicle failed Georgia's emissions inspection and the tech flagged exhaust-related codes

Our Exhaust Repair Process

  1. 1

    We start with a cold inspection of the full exhaust system on the lift — visually tracing every component from the exhaust manifold at the engine all the way back to the tailpipe, looking for cracks, rust-through, separated joints, and damaged hangers.

  2. 2

    Next we connect our OBD-II scanner to pull any stored or pending fault codes, particularly P0420 and P0430 which point to catalytic converter efficiency issues, as well as any oxygen sensor codes that could be caused by upstream exhaust leaks.

  3. 3

    With the engine running and warmed up, I use an exhaust gas detector around suspected leak points — manifold gaskets, flex pipe connections, and pipe seams — because some leaks only open up under heat and pressure and won't show on a cold inspection.

  4. 4

    Once we've identified exactly what's failed, I walk the customer through what we found, show them the damage when possible, and provide a written estimate broken out by component so there are no surprises before we start cutting or welding.

  5. 5

    After completing the repair — whether that's patching a flex pipe, replacing a muffler, swapping a catalytic converter, or resealing a manifold gasket — we run the vehicle on the lift and on a road test to confirm the noise is gone, no new codes have set, and exhaust flow is back to spec.

Pro Tip

Georgia is one of the states where a failing catalytic converter will directly cause you to fail your emissions test, and Hall County vehicles are subject to those OBD-based emissions checks — so an exhaust leak that contaminates your upstream oxygen sensor can trigger a cascade of false fault codes that make your car look sicker than it is. A lot of shops replace O2 sensors when the real fix is sealing a small manifold leak upstream, which is why we always trace the exhaust system before quoting sensor work. Also worth knowing: stainless steel exhaust components cost more upfront but last significantly longer in Georgia's humidity and heat cycles, and on higher-mileage vehicles they're often the more economical choice over a two-year horizon.

Frequently Asked Questions

How much does exhaust repair cost at Mr Automotive Repair in Gainesville, GA?
Our exhaust repairs range from $99 to $800 depending on what's failed. A simple muffler patch or exhaust hanger replacement sits at the lower end, while a full catalytic converter replacement on a newer vehicle can approach the higher end due to parts cost. Here in Gainesville we see a lot of corrosion-related failures because of humidity and road conditions, so the final number really depends on how far the damage has spread. I'll always give you a written estimate before any work starts, and everything we do carries our 12-month/12,000-mile warranty.
Can an exhaust leak cause my check engine light to come on?
Yes, and this catches a lot of people off guard. An exhaust leak upstream of your oxygen sensors — particularly near the manifold — allows outside air to mix with exhaust gases, which throws off the sensor readings. Your ECU interprets that as a rich or lean condition and can set codes that look like fuel system or sensor failures. We've seen cars come in with a handful of fault codes that all cleared after we sealed a single manifold gasket leak. That's why we always inspect the exhaust first before recommending sensor or fuel system repairs.
How long does exhaust repair take, and how do I know when I need it?
Most exhaust repairs at our shop take between one and three hours. Simpler jobs like a muffler swap or flex pipe replacement are usually done same day. More involved work like a catalytic converter replacement or manifold gasket repair may take closer to the three-hour mark. As for when to come in — don't wait on this one. If you're hearing a new rumble, rattling, or hissing under the vehicle, or if you smell exhaust inside the cabin at any point, get it looked at right away. Exhaust leaks near the front of the vehicle can allow carbon monoxide into the passenger compartment, which is a safety issue, not just a repair issue.
Is exhaust repair cheaper at an independent shop versus the dealership in Gainesville?
In most cases, yes — noticeably so. Dealerships carry higher labor rates and typically source OEM parts at full retail, which can push a catalytic converter replacement well past $1,200 or more on common vehicles. At Mr Automotive Repair we use quality aftermarket and direct-fit OEM-equivalent parts and keep our labor rates competitive for the Gainesville area. Our ASE Certified technicians do the same quality of work without the dealership overhead. And unlike some quick-lube chains, we actually diagnose the root cause before replacing parts — so you're not paying for components that didn't need to come off.
Mike Harrington, ASE Master Technician at Mr Automotive Repair Gainesville GA
Mike Harrington · Lead Technician & Shop Manager
ASE Master Automobile TechnicianAC Delco ProfessionalGeorgia Motor Vehicle Inspector

I've been turning wrenches since I was 14 in my dad's garage in Cumming.

Prices reviewed: March 2025