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auto repair

for Essential workers, first responders and hospital workers
5 star review from Mike Pesci
The guys over here are awesome. So helpful and honestly just want to get you whatever you need and get you back in your car. Your search is over, BRING YOUR CAR TO AUTOMOTIVE AUTHORITIES.
5 star review from Steve Phelan
We had a problem with our engine and the injector needed to be replaced. This is a very trustworthy mechanic. They charged us a reasonable price and did the job in a day and recommended something else to repair in the future, but didn't need to do it now. Highly recommend working with them.
5 star review from Patty Arnold
Reasonable rates, great service! They are getting popular, so plan accordingly.
Who we are

Longmont's Authority on auto Repairs & Maintenance

With the name Automotive Authorities, we gave ourselves a goal: to be the auto repair shop Longmont drivers trust for accurate, honest advice and service. In addition to staying at the leading edge of automotive technology, we believe in treating our customers like family. When you bring your car or truck to us, you’ll know who’s working on your vehicle, and you’ll never have any question about how the job got done. We’ll go the extra mile to make sure you fully understand your vehicle’s needs, now and into the future.

  • 2yr/24 miles Nationwide Warranty
  • Nice Waiting Area Beverages & Wi-Fi
  • Active Military, First Responder, & Health Care Workers Discount
  • Shuttle Service, Loaner Cars & after hours key drop
  • Pet Friendly Auto Repair Shop

Liz, Receptionist



Welcome to Automotive Authorities LLC

Training, Experience & Passion for Auto Repair

At Automotive Authorities, we’re passionate about cars, and that means repairing vehicles thoughtfully and respectfully. Some auto repair shops unnecessarily replace parts and entire systems instead of truly diagnosing and fixing the actual problem. Not here. Our mechanics take it to heart—and mind—that you can’t be an authority without knowledge and integrity.

If you’re looking for an auto repair shop you can trust in the Longmont area, please give Automotive Authorities a call! We are driven to do our job right every time, and are rewarded by the smiles we see on our customers’ faces. We’d love for you to become part of our extended family.

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Vehicles We Service & Repair

Our customers trust us to work on all types of vehicles, and we offer a complimentary inspector with every repair or service.

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  • AutoCare Center Logo
  • BBB logo
  • Automotive Service Excellence Logo

24,000 Mile or
24 Month Warranty

Automotive Authorities LLC, is a full-service auto repair and we can back our work with a 2 year/ 24k mile warranty.

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Services we offer

Complete Auto Repair Services for Longmont drivers

At Automotive Authorities, we offer a full range of auto repair and maintenance services for Longmont area drivers. Our customers trust us to work on all types of vehicles, and we offer a complimentary inspection with every repair or service. If we can fix a problem instead of replacing a part, we will—and it’ll save you money. Here’s a list of our services, but if you don’t see what you need, please give us a call because we do it all!

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Napa Easy Pay and Synchrony

Financing Available

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Synchrony Financing Logo

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