Why Rimrock Auto Group?

Rimrock 20 Years

Rimrock Auto Group is the largest auto group in southern Montana as such we have the largest selection of new and used vehicles available to you today.

Come experience the 'Rimrock Way'! With our friendly, knowledgeable staff. You'll be happy you did.

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Your One Stop for Everything Automotive


Whether you're looking for a new truck, a used car, service, parts, the latest accessories or anything in between, Rimrock Auto Group has it.

Since we're the largest group in our area, we've got the vehicle that you need at a price you can afford. Call today at 406-651-5000

Welcome to Rimrock Auto Group in Billings, Montana. Your Low Price Leader, Dedicated to Family Service!
With 7 seperate dealerships and 7 manufacturers under the Rimrock Auto Group banner, new and used selection is second to none.
  • New Inventory: Pick from brand new GMC, Chevrolet, Subaru, Cadillac, Mercedes, Volkswagen and Kia vehicles from our massive inventory.
  • Used Inventory: Fresh preowned inventory of over 300 units in Billings!

Welcome to Rimrock Auto Group

Rimrock Auto Group, treats the needs of each individual customer with paramount concern. Being one of the largest Auto Groups in the Montana / Wyoming region, selling GMC, Chevrolet, Cadillac, Subaru, Volkswagen, Kia, and Mercedes-Benz, we know that you have high expectations, and as your primary Billings car dealer we enjoy the challenge of meeting and exceeding those standards each and every time. Allow us to demonstrate our commitment to excellence!

Our experienced sales staff is eager to share its knowledge and enthusiasm with you. We encourage you to browse our online inventory, schedule a test drive and investigate financing options. You can also request more information about a vehicle using our online form or by calling (866) 694-4116.

If you don't see a particular vehicle, just send us your info, we will gladly inform you when a matching car arrives. If you'd like a see a vehicle in person, click on Dealership: Directions for step-by-step driving instructions to that dealership, or give us a call. We look forward to serving you! Please checkout all of our dealer site links at the top of the page or below.

We’re Nominated for the 2014 Readers Choice Awards!

Rimrock Auto Group is celebrating 20 years of business in Billings! We know that you have high expectations, and as your primary Montana car dealer we enjoy the challenge of meeting and exceeding those standards each and every time. From an oil change to a new car purchase, we treat all your needs with paramount concern and respect!

And, thanks to your support, we’ve been nominated for the 2014 Billings Gazette Readers’ Choice awards!

In four categories, no less!

Please take a few minutes out of your day to head over to the Gazette page and vote for us!

Remember, you can vote once per day, through August 17th, 2014!  

please vote for rimrock grouppage



  • Wireless Charging for Smartphones! | Rimrock GMC Cadillac
    Wireless charging for smartphones can reduce cable clutter and help keep your hands on the wheel and eyes on the road! Yeah, it’s easy to use, too! Check out how it works on the GMC Yokon Full Size SUV! Learn More at http://www.rimrockgm.com !
  • Making of the 2015 WRX and WRX STI | Rimrock Subaru
    The Subaru WRX and STI cement the standard by which Rally performance is measured. The Subaru engineers set about redesigning an already legendary performer and had only one goal: create the best-handling WRX and STI ever. See how they did it! Learn More: http://www.rimrocksubaru.com