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JBS Auto Services
- Diesel
- f350
- Honest
“And have given TREMENDOUS advice, taking time to address and discuss future needs and maintenance/upkeep tips for keeping my truck in top running shape...”
Best Muffler & Exhaust Shops in Simi Valley, CA
24 technicians listed · 11 in Simi Valley · 10 open weekends · 22 rated 4.5+ · 2 show a license
Data verified October 16, 2026
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Bill's Quality Auto Care
“They also fixed a number of minor things with my car for no charge, charged my battery which was low from sitting for so long, and cleaned up the grease prints left all over my car from the last vendor.”
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R&S Automotive
“If I didn't get it fixed I've never been here before but I looked up on Google and they had a Lotta great reviews so I decided to take a chance and the whole experience was very easy, Tony is great”
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A & D Automotive Inc
- Work
- Happy
- Mechanic
“Excellent service!”
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Specialty-z
- Dyno
- Craft
- Tuning
“So I was at Specialty-Z for dyno Edgar customer service was super great,he was very knowledgeable and know his job very well,im going to have a new project with Specialty-Z very soon,thx guy and highly recommended Specialty-Z”
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Affordable Care Auto Repair and Auto Body
- Fair
- Area
- Price
“I was told my front alignment was severely damaged, so I called the owner, Carlos on a Friday and was told to bring the car in the following Monday morning.”
Listed for drivers in and around Simi Valley, CA, 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: Simi Valley, CA
Of the 24 technicians we list here, 11 are in Simi Valley itself and 13 come from towns including Thousand Oaks (2, 9 mi), Santa Clarita (2, 18 mi) and Valley Glen (2, 20 mi). The technicians on this page are rated from 4.0 to 5.0 across 2,064 reviews; 10 have 50 or more reviews and 22 are rated 4.5 or higher. When customers rate these technicians on specific qualities, they most often praise professionalism (89%), punctuality (82%) and quality (82%). The topics that come up most in reviews of the technicians on this page are "price", "fair" and "honest". 10 are open on Saturdays. The services the technicians on this page list most often on their websites are transmission repair (3), auto repair (2), brake repair (2), clutch repair (2) and fleet services (2). 2 show a license on their websites; 3 list staff certifications (ASE) and 8 have a BBB rating of A or A+. 20 have ten or more years of experience, the longest 45 years. 2 offer financing; 3 give free estimates; 3 are family- or locally-owned and 10 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 4 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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Championship Muffler Service
- Happy
- Price
“Had them do duals for my 69 chevelle in 1979,and came back in 2014 to do the same in a 77 chevy 4x4 and both times got some of the most beautiful exhaust work I've seen anywhere!!”
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Duran Truck & Auto Repair
“I highly recommend him for all your mechanic needs, Thank Mike !!”
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Alfredo's Auto Repair
- Price
“I came in this morning, and an absolute panic, I had borrowed a friends car who had deliberately asked me not to roll the window down but, of course, as clumsy as I am, I did it!”
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JP Auto Repair
- Price
“The most excellent service, they handle everything from oil changes to transmission check ups at absolutely fair prices and they've been handling all my car tune ups for the past 2 years.”
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U Pay Less Auto Repair
- Prices
“Honest knowledgeable reliable”
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M&S Automotive
“He said since car is driving ok wait till light is tripped again then will check which code comes up first usually one code is culprit so if we can catch it once it comes on that might be the culprit.”
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A & H Performance
“Highly recommend Avo is a true master mechanic.”
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Poblanos Auto Repair
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Soyapango Muffler Repair North Hollywood
- Warranty
- Price
“I have been a customer of this place for a long time and they have always treated me with kindness and respect, and the work carried out on my different cars has always been excellent.”
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Westlake Independent Automotive
“My dad took his Honda's in for the last 20 years and I have continued to bring mine to them as well for the last 6 years despite moving out of Ventura county.”
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Ride-Way Auto Service & Tire Shop
- Owner
- Fair
- Steering
“I'm pretty much low-income and the owner did a few things for me for free to make sure I was safe driving my car because I couldn't afford to pay him for everything that he recommended.”
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Academy Automotive (805)
- Truck
- Jeep
- Team
“Gus not only facilitated in sourcing out the accurate parts, but completed the job in less time than anticipated and a fraction of the anticipated cost.”
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360 Auto Clinic
- Reviews
- Test
- Honest
“The dealership I normally go to wanted to charge me double what they charged me for brakes and even suggested that I needed something that I didn't really need, come to find out from the guys at 360.”
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American Muffler
- Catalytic Converter
- Money
- Exhaust
“Brought our van here a couple of years ago for a muffler replacement, this time it needed a new cat converter, unfortunately the guys here couldn't do the job as it's a dealer only job which I suspected but I'd rather go to an independent shop.”
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Ernies Auto Care & Smog
- Vehicle
- Phone
- Prices
“Even when it became apparent that we couldn't afford the necessary repairs Hope continued to be extremely helpful and came up with options we hadn't even thought of.”
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Valencia MBZ & VW
- Mechanic
- Knowledge
- Drive
“They were stuck at 3:00 pm on Friday and AAA did not arrive for 4 hrs mind you they were on the side of the freeway on the grapevine, it was not safe and it was hot the temp outside was 95 degrees.”
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JMP Autowerkz
“The team at JMP were amazing, they knew exactly how to work on my new 2023 C8 Corvette Stingray and did the work with excellence and in a very timely fashion.”
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Auto Precision Repair
- Price
- Mechanics
“Very experienced mechanics, honest, best prices in the area, I've taken both Mercedes and Toyota to this place and had the best experience they knew so much about the cars and gave me jaw dropping prices!”
Muffler and Catalytic Converter Services in Simi Valley, CA Cost Estimates
Minimum cost
$108
Maximum cost
$1666
National Average
$167
Avg Per Hour Rates
$90
$131
$286
Average price range is based on 468 cost profiles
Why these companies made our list
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