JBS Auto Service
“When they found a major problem they gave me all of the options and scenarios to fix the problem”
Best Muffler & Exhaust Shops in Simi Valley, CA
15 technicians listed · 11 in Simi Valley · 6 open weekends · 13 rated 4.5+ · 2 show a license
Data verified October 16, 2026
Bill's Quality Auto Care
“Fantastic communication and the right mix of using technology while also leveraging the personal touch.”
Specialty-z
“Seb has amazing customer service and will respond to emails and will assist you throughout the tunning process.”
A & D Automotive Inc
“I enthusiastically recommend them to anyone looking for an auto repair shop that goes out of its way to satisfy their customer.”
Championship Muffler Service
“I was so impressed with his work I forgot to take photos of it up on the lift lol.”
Alfredo's Auto Repair
“He is an Expert with all the stuff did a great job Thank you Alfredo”
Listed for drivers in and around Simi Valley, CA, 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: Simi Valley, CA
Of the 15 technicians we list here, 11 are in Simi Valley itself and 4 come from Thousand Oaks (2, 9 mi), Westlake Village (1, 10 mi) and Newbury Park (1, 11 mi). The technicians on this page are rated from 4.0 to 5.0 across 1,453 reviews; 7 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" and "fair". 6 are open on Saturdays and 1 on Sundays. The services the technicians on this page list most often on their websites are auto repair (3), brake repair (3), mechanic (2), oil changes (2) and preventive maintenance (2). 2 show a license on their websites and 5 have a BBB rating of A or A+. 13 have ten or more years of experience, the longest 45 years. 1 offers financing; 1 gives free estimates; 1 is family- or locally-owned and 4 list coupons or special offers. 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 Simi Valley?
An online booking link appears on 2 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.
U Pay Less Auto Repair
“This is an excellent place i work right next door when ever we have our automotive needs he take cares of us and his prices are reasonable thank you”
M&S Automotive
“Outstanding service, fair price, Mark is a man of integrity and honest.”
Duran Truck & Auto Repair
“Always professional, will tell you like it is and will never up charger or recommend a service you don't need!”
JP Auto Repair
“They are honest and very good and you can get just about any job from an oil change to an engine change, you won't go wrong going to JP Auto.”
Poblanos Auto Repair
“Alex, thank you so much for everything you did for me!”
Westlake Independent Automotive
“No longer work nearby them but drive back to them because they're the best.”
American Muffler
“They did the work correctly and quickly for a great price”
Star Automotive LLC
“Helped me because I'm just traveling for work and needed the car fixed same day.”
Auto Precision Repair
“I always take my car ( Audi 4 ) to Auto Precision One Inc and the Technicians do a great job , the price is always reasonable and very honest people .”
Why these companies made our list
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