WE ARE OPEN, please phone 905-709-7679 to book an appointment. Please click here to learn about our Safety Measures.

"**Finance: Offers are valid toward the finance purchase of an eligible new 2021 Cadillac XT4/XT5/XT6/CT4/CT5 delivered in Canada between April 1, 2021 and April 30, 2021. Advertised offers not applicable in Quebec. Limited time offer available on approved credit. Terms may vary by model. Representative finance example based on a new 2021 Cadillac XT6 Sport. MSRP is $66,458. $3,950 down payment or equivalent trade-in required. $62,508 financed at 0% APR equals $1,031 per month for 60 months. Cost of borrowing is $0, for a total obligation of $65,790. Taxes, license, insurance, registration and applicable fees, levies and duties (all of which may vary by dealer and region) are extra. Dealer may sell for less. Dealer order/trade may be necessary. On approved Credit. ++Whichever comes first: 4 years or 80,000 km from delivery date. Cadillac Premium Care Maintenance Program provides eligible customers who have purchased, leased or financed in Canada a new eligible Cadillac with a GM dexos1™ oil and oil filter change, and tire rotations (limit of up to eight (8) in total) in accordance with the oil life monitoring system and your vehicle’s Owner’s Manual, along with limited inspections and other select services, for 4 years from your vehicle’s delivery date or 80,000 km, whichever occurs first, performed at participating authorized Cadillac dealers. CTS-V may be eligible for additional services. Fluid top offs, brakes, wheel alignments etc. and dealer recommended maintenance are not covered. May not be redeemed for cash or combined with certain other consumer incentives. General Motors of Canada Company reserves the right to amend or terminate this offer, in whole or in part, at any time without prior notice. Additional conditions and limitations apply. See dealer for details. *To qualify for the Costco Member Pricing, you must be a Canadian resident holding a valid driver’s license, have been a Costco member since March 1, 2021, or earlier and must: (1) Register with Costco to receive your non-transferable Authorization Number; (2) Present the Authorization Number to a participating dealer; (3) Retail purchase, finance or lease an eligible new or demonstrator in-stock Cadillac 2021: XT4 (excl. Lux), XT5, and XT6; delivered from March 2, 2021, to April 30, 2021. In addition, to receive a $500 Costco Shop Card by mail, submit a redemption form to Costco within thirty (30) days of vehicle delivery and complete a Costco member satisfaction survey. Please allow 4 weeks for Costco Shop Card delivery, pending completion of all eligibility requirements; including redemption form submission, purchase verification and survey completion. Costco Shop Cards will be mailed to the mailing address provided to Costco at the time of registration. The purchase or lease of a vehicle does not qualify for the calculation of the Costco Executive Membership 2% Reward. Offer may not be redeemed for cash. Conditions and limitations apply to this limited time offer. For full program details and for any applicable exclusions see a participating dealer or costcoauto.ca/GM. For Costco Shop Card terms and conditions, visit Costco.ca and search “Shop Card”. Tax, title, registration and license fees, personal property registration fees, and additional products and services are not included in the Costco Member Pricing. Offer is valid at participating authorized GM Canada dealers. Offer not available in the U.S. or Mexico. Offer is subject to change without notice. Void where prohibited. Costco and its affiliates do not sell automobiles nor negotiate individual transactions. ®: Registered trademark of Price Costco International, Inc. used under license."

Each Cadillac CPO vehicle is thoroughly inspected and reconditioned and includes factory-backed limited warranties and roadside assistance.

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Roy Foss Thornhill Cadillac offers many benefits exclusive to our dealership. Check them out and see why you should purchase from us.

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Google Apr 17, 2021

Was in for the first oil change on my Encore GX. The service folks pointed out there was an outstanding recall notice so made time to address it at the same time. Work was completed quickly and staff were friendly and helpful. From a COVID perspective appropriate protocols were in place and felt safe.

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Google Apr 16, 2021

I bought my 2nd pre-owned vehicle from Mike Raguso and he is fantastic to deal with. Honest, straightforward, professional and will do everything he can to make you happy. He has my business for life!

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Google Apr 16, 2021

Outstanding customer service from Nick Navidi and Roy Foss yet again. This is our third vehicle from Nick and he keeps hitting home runs with the deals and service. My husband and I love our new Cadillac. Thanks for everything Nick.

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Google Apr 14, 2021

. I had a very good experience with Nick he is so professional and good personality, he also gave me a good deal.

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Google Apr 13, 2021


Welcome to Roy Foss Thornhill Cadillac

Cadillac Dealer in Thornhill, ON

Roy Foss Thornhill Cadillac is Thornhill‘s premier Cadillac Dealership with a long-standing tradition of excellence since 1962. Our world-class facility offers sales and financing of new, used and certified pre-owned vehicles as well GM Certified Service. Our heritage and superior reputation have helped us to become the #1 Cadillac Dealer in Canada. We provide our valued customers an experience that not only meets, but exceeds their expectations, time and time again. Whether you’re shopping for your next vehicle, or are in need of scheduled maintenance or repairs, we can help! Roy Foss Thornhill Cadillac is conveniently located in the GTA near North York and Markham. Visit Roy Foss Thornhill Cadillac today, our team looks forward to serving you!

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7200 Yonge Street Thornhill, ON L4J 1V8

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7200 Yonge Street • Thornhill, ON L4J 1V8

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Today's Hours:

Open Today! Sales: 9am-5pm

Service: Closed

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Roy Foss Thornhill Cadillac 43.802436, -79.423681.