Transmission Maintenance & Service in Thornbury, ON

Keep your car on the road with preventative transmission maintenance

Just as you have other parts of your car serviced, your transmission needs maintenance to ensure a long life and avoid transmission problems. Our transmission service consists of a complete diagnosis of your transmission’s performance and general operation. Several of these procedures will be performed twice; once by the centre manager, and then again by a technician. This method allows double checking of your transmission’s key systems, while providing you with added assurance.

Multi-Check Inspection in Thornbury, ON

The Mister Transmission Road Test and Multi-Check Inspection includes:

  • Visual Inspection
  • Fluid Check (on models with dipsticks)
  • Road Test
  • On Board Diagnostics (OBD) Computer Scan – read codes

Learn more about the Multi-Check Inspection:

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Transmission Fluid Check

The fluid check indicates the first sign of possible wear and damage. A transmission in good condition will have a clear red fluid. If your fluid is discoloured or has unpleasant odour, this may be an indication of internal wear and damage which is occurring as you drive your vehicle. An unpleasant odour and discoloration, in combination with other symptoms, may require an internal inspection of your transmission.

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Road Test

The road test consists of two segments: a stationary test and driving test, which together comprise the most detailed portion of the Multi-Check. Every position of your transmission will be thoroughly tested for slipping, noises, harsh, soft or erratic shifting, as well as late or early shift patterns.

What’s Next After Your Free Road Test and Multi Check?

*Additional Charges may apply*

Why Choose Us

Lift Inspection

During the lift inspection our technician will check the following:

  • Neutral Switch
  • Engine RPM
  • Throttle Linkage
  • Modulators
  • Transmission Mounts
  • U-Joints
  • Fluid Retention
  • Electronic Controls

This will determine if a minor adjustment will correct the problem of your transmission.

Pan Examination

In all pans, there are some metal particles and friction material present. However, an excessive amount indicates internal wear and damage. If that is the case, and it is determined that a minor adjustment will not correct the problem, we will recommend Mister Transmission’s inspection service. This service will determine exactly what is wrong inside your transmission.

Inspection Service

Your transmission is one of the most complex systems in your vehicle, with hundreds of precision parts operating together. Determining the problem and providing a price sometimes requires removing and even dismantling your transmission. Not only will we be able to determine the problem, we’ll also be able to determine the cause to prevent any future problems. Some of these services will require additional charges, which we will request you authorization prior to the work being performed.

Transmission Fluid Change Service

We also offer a transmission fluid change service to help ensure your transmission continues to operate at its best for years to come.

Learn More About Maintaining Your Transmission

Talk to a Customer Service Representative

Ask questions or address any concerns by calling 1-800-373-8432 or e-mail customerservice@mistertransmission.com, or find a Mister Transmission location near you.

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.

Learn More
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Customer Reviews
They fixed my truck for...
Larry McCarell
They fixed my truck for a very reasonable price .
Date: January 15, 2026
Website: Google
All the guys at Mr....
Freda Dale
All the guys at Mr. Transmission are awesome! They know their stuff, they’re honest, professional and don’t take advantage of their customers.
Date: November 5, 2025
Website: Google
Friendly helpful staff who did...
James Connolly
Friendly helpful staff who did their best to reduce costs!
Date: October 2, 2025
Website: Google
Friendly....Knowledgeable and very fast.... ...
Laura Jack
Friendly....Knowledgeable and very fast.... ...
Date: July 31, 2025
Website: Google
Excellent service and friendly staff....
Alberto Alexander
Excellent service and friendly staff. It was a pleasure dealing with Chris.
Date: July 30, 2025
Website: Google
Great service very pleased they...
Edward Clements
Great service very pleased they even called to say they could fit my viechle in the day before my appointment
Date: July 30, 2025
Website: Google
Chris and his team were...
Anna Almera
Chris and his team were very accommodating and helpful. They gave us peace of mind when we brought our car for repair. Best service so far!
Date: July 30, 2025
Website: Google
We took our rather aged...
T. Lo
We took our rather aged vehicle (13 years and counting) here to be checked for transmission issues as our mechanic thought our vehicle issues might be the trannie. However, a thorough checkup, including but not limited to a drive by Mr. Transmission staff showed it is not the transmission at fault. They took it out on the road long enough to get several code readings (longer than our mechanic who could only generate one inconclusive code reading) that spell the demise of our vehicle (at 330,000 km & 13+ years, it has had a good run). They advised against putting $$ into the vehicle as they ran a few other tests that point towards a full-out failure of the engine as inevitable. Consider if you will that they did not charge us to check the vehicle and they in no way attempted to take advantage of us by trying to get us to make repairs that would be costly and fruitless. It was an absolute pleasure to deal with such honest folk. Not to diss mechanics and/or service technicians working elsewhere or any repair shops but too often these days, we have run into places where they tend to "create" issues that do not exist to further their business (or so it seems). It was refreshing to deal with good and decent folk even though the news about our vehicle was not as we had hoped. Thank you, Mr. Transmission in Owen Sound for your kindness, professionalism, empathy, and honesty. We had hoped to get a few more years out of our beastie but such is not to be and we thank you wholeheartedly for not trying to take advantage of us and in fact, for advising us against costly repairs that would not be worth the investment. We wish you every success.
Date: July 25, 2025
Website: Google
I received great service and...
Tim E
I received great service and an honest assessment from Chris and his team. Sincerely appreciated.
Date: July 17, 2025
Website: Google
Chris was very kind and...
Alexis Dugré
Chris was very kind and helped us out when we had an issue during our vacations in Tobermory area. He picked up the phone, took the time to listen, understand and propose solutions. He took the car in to scan it and check the transmission oil quality etc to asses the severity of a very problematic check engine code on our Promaster (dodge transmission). In the end it was best for us not to repair it there due to logistics reason and that is what he told us. Would not take a dime for the service and told us to go on our way because it was the best thing to do for us. I don't see mechanics doing that everyday I'm glad there are still good people out there. Kudos to Chris and his team
Date: July 15, 2025
Website: Google
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