County Tire & Auto Service
“I went to County Tire today for the first time and their service was prompt, courteous, and straightforward.”
Best Transmission Fluid Change & Flush in St. Louis, MO
21 experts listed · all 21 in St. Louis · 4 open weekends · 18 rated 4.5+
Data verified October 19, 2026
Hayes Engine Management Inspections
“The service was fast and professional, and I enjoy the homey atmosphere.”
123 Auto
“Was late for emissions test and still got me in and done very quickly, will be back!”
Emge's Carcraft Automotive Repair.
“In my 50 years, the best service I have experienced is from this service.”
Carsmart Auto Service
“Trying to find an automotive shop that can be trusted has always been stressful for me but a truly feel the team here is trustworthy.”
Auto Evaluators
“Really appreciated the local shop experience we received for the work on our Volvo versus what we had received at area dealers.”
Listed for drivers in and around St. Louis, MO, these 21 shops change and flush transmission fluid. What each one says about fluid brands, filters and pricing comes from its own website; ratings and quotes come from public reviews.
Area overview: St. Louis, MO
All 21 experts we list here are in St. Louis itself. We have 26 experts in St. Louis on file; this page shows the highest-rated 21. The experts on this page are rated from 4.2 to 5.0 across 3,619 reviews; all 21 have 50 or more reviews and 18 are rated 4.5 or higher. When customers rate these experts on specific qualities, they most often praise professionalism (88%), quality (73%) and value (67%). The topics that come up most in reviews of the experts on this page are "communication", "honest" and "fair". 4 are open on Saturdays. The services the experts on this page list most often on their websites are brakes (2), diagnostic center (2) and transmission (2). 6 list staff certifications (ASE) and 13 have a BBB rating of A or A+. Domain records put 12 websites of the experts on this page at ten or more years old; the oldest dates from 1997. 6 offer financing; 3 give free estimates; 5 are family- or locally-owned and 11 list coupons or special offers. We count these figures across the experts on this page; hours and prices change, so confirm the details with the expert before you visit.
Can I book a fluid change online with shops listed for St. Louis?
An online booking link appears for 6 of the 21 shops. Give them the year, make and model when you book, because the fluid has to be on the shelf and some specifications are ordered in rather than stocked.
Master Auto Repair
“I had a performance car that was frequently serviced here & kept running like new.”
Greg's Auto Service and Repair
“He was frequently in contact with me during the process because I had never had an engine replacement,.”
Marty's Auto Shop
“When we took the car to Marty's for a different issue, we asked about the washer fluid, he said it was a broken elbow he would fix it, and he did no additional charge.”
Union Weber Autocare
“Exellent customer service staff was very freindly and mark took care of me fast and with amazing customer service thanks guys !!!”
Eric's Master Auto Repair
“It's really awesome finding a car repair shop that is honest and knows how to fix your vehicle right.”
Epic Automotive
“I always come to these guys for their services.”
Jackson's Master Auto Repair
“John and his technical staff at Master Auto on Fyler have consistently provided great auto service for my vehicles over many years.”
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Sant Automotive
“My family and I have been using sant automotive for all of our automotive needs for years.”
Bimmers R Us
“I cannot recommend them enough for peace of mind and the joy of driving.”
Chippewa Tire
“I needed a new tire, so I called and spoke to Dina, she was very helpful and got me in the next day.”
Klein's Loughborough Auto Care
“He does a great job and his prices are very fair and he knows what he's talking about!”
Aamco Transmissions & Total Car Care
“The manager was polite, friendly and very knowledgeable and the technicians did an excellent job in diagnosing and making the needed repairs.”
A Plus Autocare
“Shop Manager was friendly and explained and showed everything to me, the waiting room was very clean and so were to bathrooms.”
King Auto Repair
“Great people ,amazing work and custom service…”
Precision Import Auto Service
“We've been using Precision Import Auto Service for decades, for the service of our Honda Accords.”
Why these companies made our list
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