Aktiv Automotive
“I have had my 5 series serviced here a few times and they are always honest and upfront on service costs.”
Best Muffler & Exhaust Shops in Gaithersburg, MD
21 technicians listed · all 21 in Gaithersburg · 8 open weekends · 17 rated 4.5+
Data verified October 16, 2026
Flower Hill Automotive
“They were professional throughout the service and even provided us a heads up about something unrelated.”
D&D Mechanical Enterprises
“They are honest, knowledgeable and do a good job for a fair price.”
Hanagan's
“I been there many times and I get service done within hour.”
Tony's Corvette Shop
“They did a terrific job on my 64 fuelie issues and brought attention to a few other items.”
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Tolker Auto Service
“I always get the best prices here because they don't try to up charge me on small stuff the way other shops do.”
Listed for drivers in and around Gaithersburg, MD, these 21 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: Gaithersburg, MD
All 21 technicians we list here are in Gaithersburg itself. We have 23 technicians in Gaithersburg on file; this page shows the highest-rated 21. The technicians on this page are rated from 4.0 to 5.0 across 1,637 reviews; 12 have 50 or more reviews and 17 are rated 4.5 or higher. The topics that come up most in reviews of the technicians on this page are "price", "quality" and "honest". 8 are open on Saturdays and 1 on Sundays. The services the technicians on this page list most often on their websites are oil change (3), brake repair (2), brakes (2), exhaust systems (2) and fleet services (2). 5 list staff certifications (ASE) and 5 have a BBB rating of A or A+. Domain records put 12 websites of the technicians on this page at ten or more years old; the oldest dates from 1998. 1 offers financing; 1 gives free estimates; 3 are family- or locally-owned and 8 list coupons or special offers. We have a website on file for 18 of the technicians on this page; 15 publish a contact page; 9 list a public email and 5 take bookings online. We count these figures across the technicians on this page; 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 Gaithersburg?
An online booking link appears on 5 of the 21 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.
Master Tech
“Master-Tech always does only what needs to be done when it needs better be done at a fair price.”
EPR Automotive
“EPR is the only place I know I can trust I will get an honest opinion of what my vehicle needs.”
General Automotive Servicenter
“They've worked with me through modding my suspension and various other things.”
J B Auto Repair
“We've had all of our cars repaired at JB Auto for the last eight years.”
Airpark Auto Collision
“A little pricey, but the best and honest mechanic I've encountered so far.”
Arautopro
“A quick look around shows that they have tools and knowledge to work on most any car import or domestic.”
Bespoke Performance and Fabrication
“Dropped my car off and they had the issue diagnosed, and repaired within a couple of hours.”
Kim Airpark Auto Repair
“Been coming to this shop for over ten years especially for alignments Kim's always takes care of their customers”
Global Motors Garage
“The best always do a great job and also have prices that are very affordable for our pocket.”
Ricardo Auto Repair LLC
“Very professional and hard working honest people..”
Sonic Tuning
“The place is in the cut so it may be difficult to find but knowledgeable of the products they sell”
Auto Check & Inspection Llc
“People there are so friendly and services”
3R Auto Repair
“Steve diagnosed the problem, purchased the part and fixed the door within an hour!”
Twins Auto Services
“My receipt had only 4 itemized charges (amazing when you compare to the nickle and dimeing that goes on at many shops.”
M&G Automotive
“Great place to take your vehicle for service.”
Why these companies made our list
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