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Weldon Spring Automotive
“Fair prices and quick to get the job done right the first time.”
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 14 from towns including St. Charles (6, 11 mi), St. Peters (4, 6 mi) and Wentzville (2, 8 mi).
2 open weekends · 13 rated 4.5+
Data verified October 19, 2026
Sigmund Auto Service
“They always take good care of my personal cars and company cars.”
Western Tire & Auto
“Excellent service and Terry is a great manager and will make sure you leave satisfied”
Complete Auto & Exhaust
“I've been coming to the shop for over 10 years and I wouldn't go anywhere else!”
Dan's Foreign Auto Repair LLC
“She took time to explain the repair in layman's terms so we could understand.”
K & B Performance
“If you want your vehicle fixed right the first time at a fair price by an honest person and you like supporting a local family business, look no further.”
Listed for drivers in and around O'Fallon, MO, these 15 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 15 technicians on this page are rated from 4.3 to 5.0 across 2,411 reviews; 12 have 50 or more reviews and 13 are rated 4.5 or higher. The topics that come up most in reviews of the technicians on this page are "price", "honest" and "fair". 2 are open on Saturdays. 6 have a BBB rating of A or A+. 9 have ten or more years of experience, the longest 63 years. 1 offers financing; 3 are family- or locally-owned and 5 list coupons or special offers. We have a website on file for 12 of the technicians on this page; 5 publish a contact page 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 15 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.
Compare Automotive
“Made an appointment to get some exhaust work done on my Chevelle, they got my car in promptly and did an excellent job.”
Zeisler Automotive- Saint Charles
“Terry/Alex & the team communicated great and let us know what was wrong with our vehicle and got it fixed in just a few hours.”
AGS Auto Repair
“Great service at a fair price,been my go to mechanic for many years,good chistian business”
Lucky Omen Garage
“Cory and the staff are awesome, they put out quality work and reasonable prices!!”
St Charles Foreign Car Inc
“Ed, owner, always calls me, communicates the issues in a way I can understand, looks for cheaper options.”
Craigs Customs
“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.”
Mid America Transmission & Auto Centers
“Had what I thought was a transmission issue, they checked into it and were honest that that wasn't the problem.”
Cartech Automotive
“I left satisfied with the results and have the confidence that Anthony did everything possible to ensure the job was done properly and would hold up overtime.”
DNK Automotive is Now DNK Auto Center
“Had a good bit of work done and not a single problem with anything....”
Why these companies made our list
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