The original dealer alternative, for over 45 years.

The Mantis Autosport story starts in Oakville in 1978 with a passion for building VW buggies. Mantis’ natural evolution was to then gravitate towards the Porsche platform for street and performance with a focus on Porsche engine and gearbox rebuilds to fill a need in the market in the years that followed.

Today, we operate out of a 10,000ft2 facility in Oakville, ON under new ownership that boasts 30+yrs of experience in the Porsche dealer environment and gold level certification.

Mantis is here to provide diagnostics, warranty-approved servicing and maintenance, as well as mechanical and electrical repairs. With our state-of-the-art equipment, Mantis specializes in engine and transmission rebuilding, custom suspension solutions, complete vehicle systems and fabrication and even have in-house dyno and tuning services.


Mantis Autosport Inc strives to supply the best possible service and solutions to our clients, in order to do that we have partnered with industry leading suppliers to achieve this. Regardless of your vehicle and needs, at Mantis you will always receive top quality parts installed with precision by our experienced techs.

We invite you to reach out and experience our friendly, personal service.

Our Services

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Porsche dealer alternative servicing, repairs and custom vehicle builds in Oakville, ON.

We utilize the latest in diagnostic equipment and information to efficiently diagnose and remedy issues and can assist clients with everything from routine maintenance and check engine lights to major mechanical work including air conditioning and electrical diagnoses.

Mantis offers all aspects of engine repair and service. In a typical year we see vehicles ranging from the 1950’s to current model.

Contact us about Vehicle Servicing, Custom Builds or Repair.

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Engine + Gearbox rebuild and repair specialists

With deep experience and understanding of Porsche’s powerplants and platform, Mantis Autosport is equipped to take on engine and gearbox rebuilds of any scope. In fact, we specialize in and relish the challenge that so many fall short on! Whether air-cooled older models, or today’s latest and greatest, we can rebuild and repair any model of Porsche.

Your iconic Porsche deserves a real Porsche engine and gearbox specialist. We invite you to visit or call us to discuss your rebuild needs. We’ll return your Porsche to top mechanical order for years of enjoyment!

Contact us about our Engine and Gearbox Rebuild Specialties

I cannot recommend Mantis Autosport highly enough. If you own a Porsche and demand nothing less than the best, this is where you and your Porsche need to go.

This team embodies First-Class service and delivers it every single time.


The team at Mantis has taken care of me and my Porsche over the past few years. They have always done an excellent job of taking care of my car through and through, and commit to completing all repairs and routine maintenance with care.


Dirk and Jon have been servicing my Aston Martin for almost 4 years now and I could not ask for better people and mechanics to work on my car. They take the time to listen to my needs as a customer and work on a cost effective solution that would be best for my car.

Dirk and John are always there to speak with and make you feel comfortable when going in.