Automatic Transmission Service & Repair Barrie, Ontario

The transmission is the most complicated component of your vehicle, and with the technology being used in today’s vehicles evolving every year, transmission repair requires more skill and knowledge than ever before. The automatic transmission used in today’s vehicles includes a combination of hydraulics and computer-controlled components. At Mister Transmission, we have state of the art diagnostic technology to determine exactly what is going on with your vehicle, and the most cost-effective solution to repair it.

Automatic Transmission Common Problems 

There are many warning signs that could indicate you have a problem with your transmission, including:

  • Transmission slipping or rough shifts
  • Fluid leaks
  • Burning smell
  • Contaminated or low transmission fluid
  • Overheating
  • Check Engine Light On

My vehicle is showing at least one of these signs, what should I do?

If you suspect your automatic transmission is not performing as it should be, bring it into your local Mister Transmission. We always start with our FREE Road Test and Multi Check Inspection to identify any problems with your transmission and provide you with different repair options. The key to minimizing repair costs is to get them checked as soon as you notice them, and you most likely only need a minor repair or service.

Featured Services
Transmission Repair

The evolution of transmissions has made these machines and systems increasingly complex. When transmission repairs are required, determining the cause and cure for what ails can be tricky.

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Transmission Technology

At Mister Transmission we have access to leading-edge diagnostic equipment, enabling us to offer you the fastest and most accurate findings about what’s going on inside your vehicle’s transmission.

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Transmission Maintenance & Service

Just as you have other parts of your car serviced, your transmission needs maintenance to ensure a long life and avoid transmission problems.

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Customer Reviews
I had a fantastic experience...
Christopher Pineault
I had a fantastic experience with this team! They are incredibly skilled, efficient, and truly go above and beyond. My caravan had major issues, including a complicated transmission problem, and they took the time to thoroughly diagnose everything with great attention to detail.What really stood out was their transparency and communication throughout the entire process. They understood how important my van is for work and made it a top priority to get me back on the road as quickly as possible.Thanks to their expertise, my van now drives like new. Huge thank you to the Barrie team and management—you clearly know your stuff. Highly recommend to anyone needing reliable, professional transmission service!
Date: April 10, 2026
Website: Google
Excellent service!! I mostly dealt...
Lisa N
Excellent service!! I mostly dealt with Jason, a pleasure to deal with. Throughout the time that our van was at the shop Jason kept open communication with us. He answered all of our questions, was always polite and pleasant. They fixed the issue with our van on a timely manner, and there were no extra surprises at time of payment. I totally recomment them. Thank you Jason. 👍
Date: February 11, 2026
Website: Google
Overall, best service I have...
Ryan Wright
Overall, best service I have been provided with in a long time. Jason helped me with my transmission issue. I had my vehicle at the dealership which told me $12,000 for a repair. I then had the vehicle towed to Mr. transmission. Jason and his crew did a free multi point inspection and found the exact issue and And they fixed it up for me and got it moving once again thank you to Jason and your team at Mr. transmission for providing a well trustworthy service. Much appreciated. Definitely will be recommending to anybody who wants proper transmission service.
Date: January 30, 2026
Website: Google
Excellent service from Jason! Very...
Steven Borsos
Excellent service from Jason! Very knowledgeable and explained my issues clearly. Zero fee diagnostic. Advised it was not a transmission issue and told me bring to a trusted mechanic. Would highly recommend if you think you are experiencing any transmission issues.
Date: January 20, 2026
Website: Google
They are worthy of your...
David Belcredi
They are worthy of your trust!!! My car was acting up and I thought it was the transmission and my car (2017 elantra 160000km) is halfway through it life so I would believe it if they came back and said you need to rebuild it. After my inspection I had the pleasure of meeting Jason an absolute legend!! He gave me the good news my transmission was fine and even gave me his two cents on what he thought it could be. For a free inspection they put my mind at ease and earned my trust. I 100% will becoming back and encourage everyone to go here . Big shout out to Jason and the guys at the shop, i had a great experience! -thank you
Date: December 3, 2025
Website: Google
Great service, great guys. Highly...
Jhon Krupa
Great service, great guys. Highly recommend
Date: November 14, 2025
Website: Google
Had my car break down...
Rona Brandon
Had my car break down called a few other transmission place and was dismissed and told there was a 2 to 4 week wait time. I called Mr. Transmission and spoke to Jason he immediately said he would fit me in and look at my car, he called with the problem and a solution and had my car fixed and back to me next day. It was great to have someone actually listen and offer to help when other places had no time. I highly recommend Mr Transmission on Essa rd in Barrie. Again Jason thank you very much.
Date: November 13, 2025
Website: Google
Mister Transmission has been such...
Thomas Nicholson
Mister Transmission has been such a wonderful experience! Absolute speechless.. three different vehicles with transmission problems and each one received outstanding service. Thank you Mister Transmission Tom and Alix Nicholson
Date: July 17, 2025
Website: Google
I couldn’t be more impressed...
Alla Toronto
I couldn’t be more impressed with the service at Mr. Transmission in Barrie! After taking my car to a dealership I ended up with a substantial quote to fix the transmission issue. A friend suggested me to take my car to Mr. Transmission and I’m so glad I did. They performed a thorough diagnosis and found the issue that the dealership completely missed. Mr. Transmission team was professional, honest, and clearly very knowledgeable. I really appreciate that they were able to fix an issue on the spot without even charging me. If you’re looking for a place that truly knows what they’re doing and puts customers first, I highly recommend Mr. Transmission. Thank you again Jason for your expert help—I’ll definitely be back if I ever need transmission work done!
Date: July 12, 2025
Website: Google
My van lost power on...
Ian Culverwell
My van lost power on the 401 driving through Barrie on a Friday night. I had it towed to Mr Transmission, they fixed it on Monday, they reported to me it was a blown line on the transmission. Faster and much cheaper than I expected. Great service from Jason and the team.
Date: June 20, 2025
Website: Google
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