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24 technicians listed · 8 in Frederick · 9 open weekends · 19 rated 4.5+
Data verified October 16, 2026
Listed for drivers in and around Frederick, MD, 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.
Of the 24 technicians we list here, 8 are in Frederick itself and 16 come from towns including Hagerstown (4, 22 mi), Rockville (3, 28 mi) and Mt Airy (2, 14 mi). The technicians on this page are rated from 4.0 to 4.9 across 3,321 reviews; 12 have 50 or more reviews and 19 are rated 4.5 or higher. When customers rate these technicians on specific qualities, they most often praise quality (89%), value (86%) and professionalism (82%). The topics that come up most in reviews of the technicians on this page are "honest" and "communication". 9 are open on Saturdays. The services the technicians on this page list most often on their websites are alignments (2), brake repair (2) and tune-ups (2). 6 list staff certifications (ASE) and 11 have a BBB rating of A or A+. Domain records put 9 websites of the technicians on this page at ten or more years old; the oldest dates from 2001. 5 offer financing; 4 give free estimates; 3 are family- or locally-owned and 9 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.
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.
- “Great service at a reasonable rate. I never go anywhere else for brakes, exhaust work or tires.” — customer of Butler Tire Service
- “JR especially was very helpful ,and my car, which had exhaust and transmission problems is in good running order, I will recommend this mechanic shop to anyone.” — customer of That Auto Shop
- “I've taken about five cars to him some with major work and some with minor work and he has done a great job each and every time.” — customer of Brunswick Auto Repair
- “They give you the repairs you need to get back on the road and they charge a fair price for it.” — customer of Brownie's Auto Repair
- “They were very patient throughout the process of finding an engine for the car as well as doing the repairs and making sure my family member was well taken care.” — customer of Brunswick Auto Repair
Excerpts from public reviews of the technicians listed on this page.
