Popular Cities
We have 2 mechanics in Union City on file, and both are on this list, along with 22 from towns including Redwood City (18, 13 mi), Daly City (2, 25 mi) and Milpitas (1, 14 mi).
1 open 24/7 · 8 open weekends · 19 rated 4.5+
Data verified October 16, 2026
Listed for drivers in and around Union City, CA, 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.
23 of the 24 mechanics on this page have a rating, from 3.8 to 5.0 across 2,664 reviews; 9 have 50 or more reviews and 19 are rated 4.5 or higher. The topics that come up most in reviews of the mechanics on this page are "price", "communication" and "diagnosis". 1 is open around the clock; 8 are open on Saturdays and 3 on Sundays. The services the mechanics on this page list most often on their websites are fleet services (3), brake repair (2), brakes (2), check engine light (2) and diagnostics (2). 5 list staff certifications (ASE) and 9 have a BBB rating of A or A+. Domain records put 8 websites of the mechanics on this page at ten or more years old; the oldest dates from 1998. 1 offers emergency or roadside call-outs; 1 offers financing; 1 gives free estimates; 4 are family- or locally-owned and 5 list coupons or special offers. We have a website on file for 12 of the mechanics on this page; 9 publish a contact page; 6 list 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.
Ten or more years in business is claimed by 17 of the 24 shops here. Rebuild quality is hands-on skill, and a shop that has been in one place a long time is easier to hold to a warranty. It is what their listings state, not a guarantee.
- “Honest shop that stands behind their work. I had a great experience and will continue to use Redwood City Transmission for any and all of my transmission needs.” — customer of Redwood City Transmission
- “I like how the rebuilt transmission that I purchased from them came with a 1 year warranty, which the business honored.” — customer of B & B Transmissions
- “Their advice has been on point. I absolutely and highly recommend Chestnut Auto.” — customer of Chestnut Auto Repairs & Towing
- “They're also excellent with being transparent & keeping me updated with what was going on.” — customer of B & B Transmissions
- “Redwood City Transmission is the real deal. Great price, awesome product and people.” — customer of Redwood City Transmission
Excerpts from public reviews of the mechanics listed on this page.
