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Weldon Spring Automotive
“Got a set of tires here, great service!”
Best Transmission Repair Shops in St. Charles, MO
15 mechanics listed · 14 in St. Charles · 3 open weekends · 14 rated 4.5+ · 1 shows a license
Data verified October 19, 2026
Sparks Tire & Auto
“I was very pleased with the service I received and the loaner car that was provided.”
LTS Automotive
“He assisted me in making decisions that were huge cost savings in deciding if the car should be serviced.”
Roy's Garage LLC
“Definitely an honest shop, does good work and their ETA is spot on or better.”
Madagascar Auto & Repair
“I bought a beautiful used late 2011 model Ford Fusion from these guys and couldn't be happier!”
Aamco Transmissions & Total Car Care
“I have been going to Aamco for years and they are the best in service.”
Listed for drivers in and around St. Charles, MO, these 15 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: St. Charles, MO
Of the 15 mechanics we list here, 14 are in St. Charles itself and 1 comes from St. Peters (5 mi). The mechanics on this page are rated from 4.4 to 5.0 across 2,208 reviews; 12 have 50 or more reviews and 14 are rated 4.5 or higher. The topics that come up most in reviews of the mechanics on this page are "price", "honest" and "diagnosis". 3 are open on Saturdays. 1 shows a license on its website; 3 list staff certifications (ASE) and 5 have a BBB rating of A or A+. Domain records put 6 websites of the mechanics on this page at ten or more years old; the oldest dates from 2007. 4 offer financing; 7 are family- or locally-owned and 6 list coupons or special offers. We have a website on file for 12 of the mechanics on this page; 8 publish a contact page; 3 list a public email and 3 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 years in business matter for transmission work?
Ten or more years in business is claimed by 10 of the 15 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.
Transmissions and More
“I will definitely be taking my car back here again when needed!”
K & B Performance
“Friendly staff good prices and gets the job done in a timely manner”
Robert's Automotive Service Center
“The only downfall is that you have to plan ahead for regular maintenance because they are so popular, but they always keep appointments.”
Zeisler Automotive- Saint Charles
“Walk-in without hesitation & got me in & out in no time!!”
Lunds Engine and Machine
“The whole process was less costly than I had expected, and I wouldn't hesitate to rebuild the engine of any other vehicle if I need to”
Matt's Auto Service
“Even better, he's a great guy who will do his best to help you in a pinch!”
Waterson Motorsports
“Every time I needed a tire this is the place I go to.”
Redwater Customs & Repair
“Amazing Place, they will be 1000% honest and fix what needs to be done!”
Coleman Taylor Transmissions
“I appreciate your honesty in advising me that my problem was not the transmission.”
Why these companies made our list
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