Comtires
“Once again I take my car to Com Tires and they get it all taken care of on time and at a very reasonable price.”
Best Transmission Repair Shops in Ontario, CA
23 mechanics listed · all 23 in Ontario · 16 open weekends · 22 rated 4.5+
Data verified October 16, 2026
Wayne's Automotive
“Boys who could never get to the root of my car's problem, it was a relief to find a mechanic who took the time to find and repair the real issue.”
Basic Auto Repair
“Came in thinking I needed new spark plugs and they diagnosed my car with a bad coil, save me money and repaired it quickly.”
C & C Automotive
“Had my A/C repaired it was done the next day,the Mechanic showed me all the part's that he took out of my Car Very Honest.”
DT Hondamotive and Transmission
“I have an MDX and a Accord which Derek has done total care for both vehicles from timing belts tune up to a simple oil change.”
Brian's Automotive Repair
“They dont try to sell services that are not needed and are straight forward as to repairs that need to be done.”
Listed for drivers in and around Ontario, CA, these 23 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: Ontario, CA
All 23 mechanics we list here are in Ontario itself. We have 31 mechanics in Ontario on file; this page shows the highest-rated 23. The mechanics on this page are rated from 4.2 to 5.0 across 1,972 reviews; 13 have 50 or more reviews and 22 are rated 4.5 or higher. The topics that come up most in reviews of the mechanics on this page are "price", "quality" and "fair". 16 are open on Saturdays. 1 lists staff certifications (ASE) and 7 have a BBB rating of A or A+. 16 have ten or more years of experience, the longest 46 years. 1 offers financing; 1 is family- or locally-owned and 2 list coupons or special offers. We have a website on file for 11 of the mechanics on this page; 4 publish a contact page; 2 list a public email and 2 take bookings online. We count these figures across the mechanics on this page; 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 16 of the 23 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.
Pro Smog Center
“The women @ the front desk is the most sweetest and nicest lady I have ever met, the man and women that run that auto shop are great people.”
Tap Automotive
“Outstanding service, very professional, would recommend to any of my friends and family”
Kar King Auto
“He originally stated it would be ready in early 2024, but to my surprise, he had it ready for shipment before the end of 2023.”
Menas Brake & Suspension
“Sergio is a trustworthy mechanic, I am always satisfied with his work coming here for many years I highly recommend him”
Southern Cal Wheel Repair
“I had a broken rim that was leaking air, they took care of my rim and welded it in a hour , they were quick and affordable, I highly recommend them .”
Motorinn Genuine Auto Care LLC
“Great mechanics & suepr trust worthy!”
Speedway Transmissions
“Mike and his brother are very knowledgeable.”
Inland Empire Driveline Services
“I had a couple questions about shaft design and the employees here were able to answer them quickly and fully!”
Baja Auto Center Smog & Lamp
“Tony is very honest and has done excellent work and repairs for our family for the last 18 years.”
Ontario Japan Auto
“These guys are great they helped me out alot and did my clutch that would have cost me alot more elsewhere and did it in a jiffy ,good at multitasking”
I.E Automotive
“I've been using this mechanic for years now, most of my family members use it.”
Crown Vic Guys
“I got my flywheel done at a great price, the mechanics know what they're doing.”
Pacific Speed
“Spent countless $$$ here, never disappointed in quality of work, quality custom fabrication always exceeded my expectations time and time again, my equipment has been inspected by the DOT and approved for on road use.”
Pomona Auto Care
“My entire family takes their cars here knowing we are going to get the best work done at an honest price.”
Team Green Motor Sports LLC
“Danny Boy is the Best and will give you a fair price .”
RC Auto Repair
“It's cheap and they get the job done right unlike any other mechanic.”
Dave Folts Transmission
“Good place to go for custom parts and work done real good”
Why these companies made our list
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