Reliable Automotive
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Best Transmission Repair Shops in San Marcos, TX
10 mechanics listed · 4 in San Marcos · 2 open weekends · 8 rated 4.5+
Data verified October 16, 2026
Pharaoh Imports & Domestics
“Best small private Veteran owned auto repair shop in NE San Antonio.”
B & M Automotive
“Every time they work on my car they know the problem immediately and they are always able to fix it fully and I never have to worry about it again.”
Belden's Automotive & Tires
“I am so glad that I have found top quality mechanics to take care of my vehicle needs.”
Aamco Transmissions & Total Car Care
“I am at ease knowing that when I take my car into AAMCO san Marcos I'm getting quality work done at a great price.”
Ellison's Discount Auto Repair
“Nathan has been my go to mechanic since I moved to San Marcos almost 10 yrs ago.”
Listed for drivers in and around San Marcos, TX, these 10 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: San Marcos, TX
Of the 10 mechanics we list here, 4 are in San Marcos itself and 6 come from San Antonio (45 mi). The mechanics on this page are rated from 3.9 to 4.9 across 3,008 reviews; 9 have 50 or more reviews and 8 are rated 4.5 or higher. The topics that come up most in reviews of the mechanics on this page are "communication", "diagnosis" and "price". 2 are open on Saturdays. 2 list staff certifications (ASE) and 2 have a BBB rating of A or A+. 6 have ten or more years of experience, the longest 107 years. 2 offer financing; 2 give free estimates; 3 are family- or locally-owned and 4 list coupons or special offers. We have a website on file for 7 of the mechanics on this page; 4 publish a contact page; 1 lists a public email and 4 take bookings online. 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 San Marcos offer financing?
2 of the 10 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.
Sanchos Automotive
“My car was making a loud rattling sound and he went above and beyond and added the correct screw to correct the noise.”
Alamo City Automotive
“Rudy and his team have been servicing vehicles for myself, my mom, my wife, and my car dealership for almost 10 years.”
Pauls Auto Body and Paint
“Old school professionalism, work was outstanding (he blended the paint on my bumper, which most won't do), and the cost was reasonable (I got three estimates and his was fairest).”
A&M Auto Center
“Was told the transmission would take a week and got a call 3 days after dropping off vehicle that it was ready.”
Why these companies made our list
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