Hanagan's
“Honest, reliable and fantastic mechanics who I trust above the many others I've used.”
Best Transmission Repair Shops in Gaithersburg, MD
24 mechanics listed · 15 in Gaithersburg · 13 open weekends · 22 rated 4.5+
Data verified October 16, 2026
Tony's Corvette Shop
“Tony's shop has helped me through a lot of tough points with my corvette and has always given me fair prices.”
DG Auto Repair & Body
“Body work(including painting) and mechanical work was completed in a timely manner.”
J B Auto Repair
“If there's a part you aren't sure of, he will go out his way to search for parts at the best offers and let you decide from there.”
Arautopro
“They did an alignment on my lowered car and did a fantastic job.”
Kim Airpark Auto Repair
“They took me in no problem and were up front and honest during every interaction that I had with them.”
Listed for drivers in and around Gaithersburg, MD, these 24 shops work on transmissions. What each one says about rebuilds, warranty terms and the brands it handles comes from its own website; ratings and quotes come from public reviews.
Area overview: Gaithersburg, MD
Of the 24 mechanics we list here, 15 are in Gaithersburg itself and 9 come from Rockville (7, 5 mi), Herndon, VA (1, 15 mi) and Reston, VA (1, 15 mi). The mechanics on this page are rated from 4.2 to 5.0 across 2,213 reviews; 15 have 50 or more reviews and 22 are rated 4.5 or higher. When customers rate these mechanics on specific qualities, they most often praise professionalism (97%), quality (79%) and value (77%). The topics that come up most in reviews of the mechanics on this page are "diagnosis", "honest" and "communication". 13 are open on Saturdays and 1 on Sundays. The services the mechanics on this page list most often on their websites are brake repair (2), diagnostics (2), oil changes (2) and transmissions (2). 7 list staff certifications (ASE) and 10 have a BBB rating of A or A+. 20 have ten or more years of experience, the longest 74 years. 2 offer financing; 1 gives free estimates; 6 are family- or locally-owned and 9 list coupons or special offers. 1 has Spanish-speaking staff. We count these figures across the mechanics on this page; distances are straight-line, and hours and prices change, so confirm the details with the mechanic before you visit.
Do any shops listed for Gaithersburg offer financing?
2 of the 24 shops on this page say they offer financing. Transmission work is one of the larger repair bills a car can hand you, so terms are worth reading closely before you sign anything at the counter.
Ricardo Auto Repair LLC
“Ricardo and his men did a quality job on replacing the covers for my visor mirrors and replacing my windshield cowl while I waited.”
E & M Auto Repair
“They won't try to oversell you and are some of the most honest, hardworking folks around.”
Flex Automotive Inc
“I would recommend especially for anyone having issues with cars like Mercedes.”
L & T Auto Repair Services
“Great to deal with, their transmission rebuild services are very professional and prices are good!”
A & L Unique Auto Repair
3R Auto Repair
“He is very knowledgeable and fair in his price and the work he suggests for your car.”
CAR Premaintenance Services LLC
“Execelent services friendly and Hones man I know him for more then 15 years and still doing excellent job”
Airpark Auto Center
“Was recommended by a trusted friend in the auto industry - great service and great people.”
M&G Automotive
“He installed an entirely new clutch, fixed my rattling exhaust (which he did free of charge without me asking), changed my oil, and charged me what seemed like an impossibility low fee for his services.”
Superior Auto Service
“I will definitely go back for further service needs for my Ford Focus”
South Lakes Sunoco
“Great costumer service, quick oil change and very affordable.”
Ormsby Auto
“Service, quality and always a smile for customers.”
Auto Clinic Care
“Easy to schedule and pleasant professional service.”
Herndon Reston Transmission
“They are friendly and customer service oriented, their prices are competitive and not out to gouge, my cars have always done well and lasted a long time with their help.”
Jacob's Autorama
“It's hard to find a quality auto repair with fair prices, Jacob's Autorama checks both of these boxes.”
Rockville Auto Repair
“It came from the official service with a version and here they advised me on what my car really needed.”
Golden Gears Automotive
“This is the kind of small independently owned local business that has earned my support and I'm happy to do so.”
Golden Gears Automotive
“From scheduling to drop-off to the amazing thoughtfulness and care that Sam took to explain the issues with my car and walk me through my options -- I just can't recommend these folks highly enough.”
Why these companies made our list
What customers say about mechanics in and near Gaithersburg
- “Hands down the most honest , thorough shop I have been to in the local area.” — customer of DG Auto Repair & Body
- “Rob and the team at Superior Auto service are easy to work with and educates me rather than telling me I need something.” — customer of Superior Auto Service
- “They really know transmissions, many techs are intimidated by auto trans work due to the many small parts, these guys are top notch.” — customer of Herndon Reston Transmission
- “I've been a repeat customer for over five years and this team has always taken great care of me.” — customer of Herndon Reston Transmission
Excerpts from public reviews of the mechanics listed on this page.
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