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DeMarois Automotive

Welcome to DeMarois Automotive

DeMarois is your hometown car dealership. Our reputation is built on customer trust, and our dedication to making sure your experience with us is not only comfortable but satisfying as well. Located along 1-90 at 3115 W Broadway, our dealership is an excellent place to check new and used vehicle inventory. So what are you waiting for?

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Certified Technicians Ready to Service

Whether you bought your car from DeMarois Automotive or not, we’d be happy to service your vehicle. Our trained technicians know the ins and outs of every brand.

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Our Reviews

Our dealership is here to make the car buying process easy.

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DealerRater Sep 18, 2022

I purchased my truck from DeMarois 3 years ago. I took my truck in for warranty service a couple of times. The service department (and especially Ivory the service writer) have been great to work with.

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DealerRater Sep 15, 2022

Ivory in service is the best, she goes above & beyond for her customers, we are very happy with her work.

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DealerRater Sep 1, 2022

Excellent customer service! We had problems with our Sprinter van and had to be towed in from Glacier National Park. Inspite of their already busy workload they were able fit us in and get us back on the road and our vacation in a short period of time. Thanks guys!

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DealerRater Aug 2, 2022

I receive excellent service each time I visit this dealership. I have also purchased many cars and trucks and am totally satisfied with the interactions I have had with the demarois staff.

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DealerRater Jul 23, 2022

Well maintained, competent staff, took time needed. Only dealer within 150 miles of us but it works

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DealerRater Jul 21, 2022

Best purchase experience I’ve had in over 5 decades of buying numerous vehicles, including Jeeps, Dodge RAMs, Corvettes, Porsche, Land Rovers, and Mercedes. Friendly, helpful, knowledgeable salesman. Lew did everything promised and had purchase paperwork ready when we showed up to complete purchase. If I were ever to buy another Mercedes, I would definitely go to DeMarois.

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DealerRater Jul 5, 2022

I was traveling and had transmission problems. they made an appointment for me the next day. I got stuck in traffic when going there and was 40 minutes late. They still got me in, fixed my issue at a reasonable price, and got me back on the road. Thanks Demoris GMC service

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DealerRater Jun 25, 2022

Friendly, competent and professional Thanks again for your help and repair to our new motor home

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DealerRater May 27, 2022

I received the initial DEF notification of DEF level at 30% while traveling between Sundance WY and Hardin MT. While in Hardin, I purchased a 2.5 gal. container of API certified DEF and added it to the truck prior to departure for Bozeman MT. The DEF level did not reset during the trip and continued to count down. I made contact with a knowledgeable friend who advised me to go to a dealer for investigation. My friend also said that it could take a number of start-run- off cycles to reset. I went grocery and pet food shopping in Bozeman (4 cycles in ...

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DealerRater May 19, 2022

Friendly staff, very professional, excellent warranty work on your vehicle. Would definitely go back for work on my vehicle.

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DeMarois Automotive 46.893669, -114.032585.