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Sales: (877) 882-9342 Parts: (877) 898-3816 Service: (877) 932-5382
3035, chemin Gascon, Mascouche, QC, J7L 3X7
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About us

Welcome to our home!

Learn more about Trois Diamants

For several years, our dedicated and expert sales team has been committed to meeting our customers' needs. We invite you to explore our online inventory and to get more information about our new and pre-owned vehicles in Mascouche. You can also schedule a test drive or inquire about our automotive financing options.

About Trois Diamants - If you can't find the vehicle you're looking for, consider using our Auto-Alert service. Just fill out the form, and we will notify you as soon as vehicles matching your preferences arrive! To discuss your options in person, our welcoming sales team is ready to assist you. Simply use the Directions function to find an interactive route to our dealership and our contact information. At Trois Diamants, we look forward to helping you!

Francois Bonin, Président

François Bonin, directeur du concessionnaire Trois-Diamants Chrysler à Mascouche

With over 25 years of experience in the automotive industry, I fulfilled a lifelong dream on September 11, 2001, by becoming the owner of Trois Diamants Autos. With the support of my wife Diane, we built a committed family business that our son Alexandre later joined. Together, we pour our hearts and energy into making our dealership a place where every customer feels welcome and truly heard.
From day one, my priority has remained the same: to offer an exceptional vehicle buying experience — from the first contact to well beyond handing over the keys. Whether you're purchasing a new or pre-owned vehicle, I personally commit to making your journey with Trois Diamants simple, transparent, and rewarding.

Your satisfaction is our driving force. And for as long as you own your vehicle, my door will always be open. If you're thinking of changing vehicles or want to discover our services, I warmly invite you to come meet me in person.

Diane Grimard, General Manager

Image of Diane Grimard, General Manager at Trois-Diamants Chrysler in Mascouche

Diane Grimard was a pillar of Trois Diamants Chrysler for over two decades. A woman of heart, intellect, and action, she left a lasting mark on the company through her leadership, kindness, and deep commitment to our customers.
After a career in real estate, she embraced a new challenge in 2002 by entering the automotive industry. Thanks to her determination and strong people skills, she built solid bridges between our team and our clients, ensuring that everyone who walked through our doors experienced service that met — and often exceeded — their expectations.
Diane played a key role in making Trois Diamants Chrysler a car dealership known for its high-quality service, professionalism, and family spirit. Her legacy continues to guide our decisions and vision every day.
We honour her with deep respect and gratitude, and we carry on her mission by staying true to her dedication to offering the very best to our customers.

Trois Diamants Auto, a Chrysler, Jeep, Dodge, Ram & FIAT dealership in Mascouche near highway 640, just minutes from Terrebonne, Repentigny, Bois-des-Filions, Rosemère, Blainville, Laval & St-Eustache.