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Weldon Spring Automotive
- Work
- Technicians
- Prices
“They discovered the problem, made the corrections, and did not charge me for the unexpected work all while staying after hours in order for me to get my car back.”
Best Muffler & Exhaust Shops near O'Fallon, MO
We have one technician in O'Fallon on file, and it is on this list, along with 23 from towns including St. Charles (7, 11 mi), St. Peters (5, 6 mi) and Ellisville (3, 15 mi).
4 open weekends · 23 rated 4.5+
Data verified October 19, 2026
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Sigmund Auto Service
- Vehicle
- Inspection
- Upsell
“This is my 3rd or 4th appt I've had here, and each time they have proven to me that they care more about the customer, and doing what's best for me instead of making money off sales.”
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Cardinal Automotive & Tire
- Job
- Work
- Respect
“Actually the time went too fast, because I was enjoying a warm, comfortable, (nothing fancy), and clean waiting area, and hadn't finished reading one of the new magazines that had been neatly arranged on the table.”
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Western Tire & Auto
“I didn't realize I needed an emissions test done for my renewal and most places were booked out a week, but they were so kind to tell me to come on in and they'd fit me in!”
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Complete Auto Repair
- Team
- Oil
- Job
“Steve and Eddy correctly and quickly diagnosed an issue that my dealer didn't, and saved me from paying the dealer over $650 to fix a problem that wasn't an issue.”
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Economy Car Care Center
- Job
- Team
- Oil
“The egr valve was in a horrible location on my van , they were able to easily change it out for me at a completely fair rate , excellent shop ,work ,and employees .”
Listed for drivers in and around O'Fallon, MO, these 24 shops handle mufflers, pipes and catalytic converters. What each one says about welding, custom work and warranties comes from its own website; ratings and quotes come from public reviews.
Area overview: O'Fallon, MO
The 24 technicians on this page are rated from 4.2 to 4.9 across 2,944 reviews; 15 have 50 or more reviews and 23 are rated 4.5 or higher. When customers rate these technicians on specific qualities, they most often praise professionalism (92%), quality (87%) and value (77%). The topics that come up most in reviews of the technicians on this page are "honest", "fair" and "knowledge". 4 are open on Saturdays and 1 on Sundays. 3 list staff certifications (ASE) and 10 have a BBB rating of A or A+. 15 have ten or more years of experience, the longest 63 years. 1 offers financing; 5 are family- or locally-owned and 7 list coupons or special offers. We have a website on file for 15 of the technicians on this page; 8 publish a contact page; 3 list a public email and 3 take bookings online. We count these figures across the technicians on this page; distances are straight-line, and hours and prices change, so confirm the details with the technician before you visit.
Can I book an exhaust job online with shops listed for O'Fallon?
An online booking link appears on 3 of the 24 listings here. Most exhaust work is short enough to be a same-week appointment, though a converter or a full section may wait on a part arriving.
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Mastertech Auto Service
- Inspection
- Job
- Desk
“Not only have they completed many repairs in an extremely timely fashion but they also offered suggestions about possible warranties from Hyundai that ended up saving me THOUSANDS.”
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Joe's Garage
“I started going elsewhere when I moved to north county, but recently, after another place couldn't or didn't want to mess with my problem, I returned to Joe's.”
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Dan's Foreign Auto Repair LLC
- Price
- Mechanic
- Money
“Ny family and I have taken several vehicles there and we get great service and quality work you dont get that anywhere anymore they are really appreciated and feel that they take care of my family.”
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Complete Auto & Exhaust
- Vehicle
- Muffler
- Pickup
“Amazing shop, quick turn around very informative and didn't try to upcharge, prices were similar to others around, Guy named Tom worked on my truck great guy nice, polite and was very helpful on which option to choose and wasn't the most expensive.”
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Compare Automotive
“Overall they did a nice job and Joe was great to work, he was honest/ transparent and this is why I take all my family and business vehicles to Compare.”
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K & B Performance
- Vehicle
- Work
- Fair
“I started going to K&B after the purchase of a Groupon for oil changes and other routine maintenance, and was so pleased with their honesty, quick work and fair prices that I've continued taking my car there for bigger jobs for years.”
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Auto Outfitters
- Truck
- Wheels
- Aftermarket
“Drew got me right in and done in quick timing and he explained everything and made sure they did what I wanted and made it look spectacular, so If your looking to style out your ride I recommend you choose auto outfitters they are the best!!”
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Zeisler Automotive- Saint Charles
- Tires
- Vehicle
- Prices
“I recently discovered this place, and although I do most of my own work I will absolutely be going here when I come across a job that I don't feel up to.”
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Lucky Omen Garage
- Vehicle
- People
“For example my check engine light, abs, that kind of stuff I feel comfortable taking my vehicles here and I know that Cory will get back to me with and update on what needs to be done as well as a price is given EVERYTIME.”
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St Charles Foreign Car Inc
- Knowledge
“He will do the jobs that I can't do myself, and has the knowledge to work through issues with me and advise what is needed and doesn't repair what doesn't need to be done.”
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Craigs Customs
- Exhaust
- Hot Rod
- Price
“Not only was I treated respectfully & NOT taken advantage of, but my 16 year old son [by himself] was given that same respect, NOT taken advantage of & had fantastic work done to his vehicle.”
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T J's Muffler Shop
- Exhaust
- Job
- Name
“We got rear-ended in our Chevy HHR and we were really worried about the exhaust harming the vehicle and not being safe and Troy got me in immediately and they looked at the car they did everything to check it out thoroughly and they did not charge me...”
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Claymont Auto Repair
- Vehicle
- Fair
- Price
“I had some questions about my vehicle and Connor was more than helpful turns out I was very low on oil he took care of me and was friendly and professional!!!”
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CNC Automotive & Diesel Repair
- Vehicles
- Price
“Casey is very professional and trustworthy my whole family uses him for all or automotive needs he is reasonable I can trust him not to rip me off and his work is great never have a problem with his work”
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Mid America Transmission & Auto Centers
- Charge
- Honest
- Truck
“I highly recommend this shop to everyone, as they towed and repaired my granddaughter's transmission when another place had it, and wanted to put in a used transmission with more miles on it then her car.”
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DNK Automotive is Now DNK Auto Center
- Job
- Prices
- Vehicle
“And he has been doing anything that I can't do myself to my vehicle's because it started out because of his location and his prices compared to others !!”
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St Charles Muffler & Brake
- Job
- Money
- Price
“Tip alignment was perfect to within 1/8" and he even cared that the mufflers under the car were level with each other (which I don't really care about myself).”
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A G S Automotive Inc.
- Vehicle
- Price
- Mechanic
“They have worked on our vehicles many times over the years and have done great work but I think their best was done with our 2000 Lexus that needed work done on the engine.”
Muffler and Catalytic Converter Services in O'Fallon, MO Cost Estimates
Minimum cost
$104
Maximum cost
$1603
National Average
$161
Avg Per Hour Rates
$86
$126
$275
Average price range is based on 442 cost profiles
Why these companies made our list
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