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

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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 6 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 right off the showroom floor.
  • Used Inventory: Used inventory is changing all of the time and extensive!

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 region, selling GMC, Chevrolet, Cadillac, Subaru, Volkswagen, Kia, and Mercedes-Benz, 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. 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.

Mercedes-Benz of Billings & the 2015 C-Class & GLA Launch Event

Mercedes-Benz of Billings hosted the 2015 C-Class & GLA Launch Event, October 11th, 2014 in Billings MT.

Several hundred people attended and we enjoyed DJ’d music, fine catered food by Asian Sea Grill, a weekend vacation giveaway, and, of course, the amazing new 2015 luxury cars during our non-sales event from 7 – 10pm. Check out some of our photos below!

Photos by Brandon S Templeton

See more of the action on our Facebook Page, and learn more about the sleek and streamlined 2015 C-Class and the rugged and capable 2015 GLA-Class Mercedes-Benz vehicles!

  • Cadillac ATS-V Model Coming? | Rimrock GMC Cadillac
    The Cadillac ATS-V is only a few weeks away from its 2014 LA Auto Show Debut! Recently, some photos have surfaced of an uncamouflaged test model. Wondering what this vehicle will bring to the performance luxury Cadillac line? As Jalopnik succinctly puts it: The soft ATS coupe has become rock solid with the introduction of […]
  • Learn about 2015 Subaru Models – Legacy and Outback| Rimrock Subaru
    Dive into the middle trim of the all-new 2015 Subaru Outback 2.5i and learn what this AWD crossover has to offer. Turn-key ready for almost any challenge, the capable Outback offers standard Subaru Symmetrical AWD featuring X-MODE®, up to 33 highway MPG and an outstanding safety reputation. Dive into the middle trim of the all-new […]