About Us

For more than 70 years, Mills Motors Buick GMC has been the greater Oshawa area’s dealership of choice. Originally founded as Cliff Mills Motors Limited in 1938, the very first car sold off the lot was a Willys Coupe for the price of $139! A lot has changed since then, but much has stayed the same. We have become one of the largest single vehicle retailers in all of Canada by putting customers first. It was a priority on the first day of business, and it continues to be a priority today.

Our 55,000 sq-ft dealership is equipped to meet any and all of your automotive needs. Looking for a new vehicle? Visit us to browse the full lineup of current Buick and GMC models. With so many choices available, you’re sure to find something you’re excited to drive. Save money on your purchase by focusing on our extensive selection of pre-owned vehicles from all types of automakers.

Count on our financing department to quickly and easily approve you for a loan, then partner with our service department to keep your vehicle in excellent shape for longer. If you ever decide that your vehicle could use an upgrade, find the parts and accessories you need right here at the dealership.

At Mills Motors Buick GMC, we proudly consider ourselves a part of the Ontario community. That’s why we help everyone we work with research vehicle options, lock in the lowest possible price, access fair financing, and handle all maintenance and repairs. Owning and driving a vehicle is easy and fun when you work with Mills Motors Buick GMC.

New Vehicles Shop From HomeContact Us

Buy From Home Value Your Trade!

Main: (905) 436 1500

Service: (905) 432 7333

Parts: (905) 723 8105

Collision Centre:

Mills Motors Buick GMC 43.9013761, -78.8554195.