Request an Appointment

    Comments/Questions:

    Welcome to Allegiance Automotive

    Taking Care of you and your vehicle with courtesy and commitment. At Allegiance Automotive, we love cars & trucks, and spend every day repairing and maintaining vehicles in our Boulder, Colorado location. We believe in full service car care and superior customer service.

    Factory Maintenance

    The key to vehicle health and car owner happiness, our experts provide the full spectrum of factory maintenance.

    Diesel Expertise

    Let our genuine diesel experts repair your Powerstoke, Cummins, Duramax or any other engine without spark plugs.

    Ford Specialists

    Ford specialists who gladly repair all makes and models

    Performance

    Blowers, Cams, nitromethane, 4 link suspension, tubbed rear ends and all other things streetrod.

    OUR EXPERT TEAM

    Providing Quality Service and Repair for Your Vehicle

    Bob

    Bob

    Owner


    Sharleen

    Sharleen

    Office Admin


    Marcin

    Marcin

    Technician


    Bret

    Brett

    Technician


    Common Services

    We service all your automotive repair and maintenance needs. From your family or sports car, trucks, and classics, Allegiance Automotive has the ability to service most vehicles, including gas and diesel engines.

    Cant be happier with my experience. We bought a used school bus to convert into a tiny home and Allegiance took it in and made sure it was worth building out as well as some routine maintenance that had not been done in years. She drives great now, thanks, Allegiance!  6/14/17

    Buck H.

    Solid shop. I had been working with another local shop and wasn’t pleased with the service and these guys blew me away. They’re genuine, kind, straight-forward, and they display excellence in their work ethic. I’m a fan!

    Sarah G

    Sarah G

    These guys are great! I recommend going to Allegiance Automotive over ANY other shop! They took every opportunity to ensure I was satisfied, kept informed, and inquired where they could do better. Don’t waste your time anywhere else! I was returning to Boulder on a 1300 mile road trip over the holidays, and my truck broke down just as I was passing Denver. The whole situation seemed bleak. It was New Years eve, I had significant plans the next day,…

    Read More

    Nathan L

    Nathan L

    These guys are great! I was returning to Boulder on a 1300 mile road trip over the holidays, and my truck broke down just as I was passing Denver. The whole situation seemed bleak. It was New Years eve, I had significant plans the next day, and I was stuck with very little options. I contacted Allegiance Automotive and spoke with the manager Jim. He recommended a great towing company that really worked with me to get my truck to…

    Read More

    Nate L

    Nate L

    ​My husband and I purchased a salvaged vehicle last year, we knew there might be some issues so we also purchased a warranty. However, when the car started giving us problems we really didn’t know who to turn to. Luckily we were paired with Bob and his team at Allegiance Automotive through a referral and we are so thankful! We brought our car in for them to look at, they did a very comprehensive review of the car and found…

    Read More

    Mara S.

    Mara S

    I have been a loyal customer of Allegiance Automotive for years. I always receive excellent customer service and car repairs. The staff on more than one occasion has been able to accommodate me with emergency repairs. I would rate this auto repair shop 5 stars.

    Robin M.

    User Image

    Simply put…these guys are the best. They have given me excellent service for the past 8 years. They are consistent and most importantly honest. Bob and his team are top notch. Boulder is lucky to have them.

    Derek-C

    Derek C

    I thought working with Bob & Caitlyn at Allegiance Automotive was great. They did a great job answering every single one of my questions in fine detail. I thought the prices were fair and they were always very responsive. They fixed my car as concisely as possible and they guarantee their work for a year.

    Awesome, trustworthy place to take your car. I would recommend them to all of my Boulder friends.

    Adnan Y.

    User Image

    Service was prompt and professional. I’ve taken my vehicle there twice now and I am very happy with the quality of work done.

    Vit S

    Vit S

    These guys are great to work with. They were able to diagnosis and fix a very tricky issue I was having with my brakes and ended up not charging me for the extra expenses it took to figure out what was going on. I’ll trust these guys with all my future repairs. They are a small independent shop so they can get backed up with work but they really know what they’re doing and they value your business. I can’t…

    Read More

    Ron S.

    User Image

    Bob Ralph and his team at Allegiance Automotive in Boulder have given me the best service I’ve ever had in my 50 years of owning cars. Bob is a knowledgeable and hands-on owner. His wife Charlene often is there to talk and work with customers. His team does great work at a very reasonable price. I’ve have always gotten good recommendations on the work I needed done and the estimates were right on the money. Most of all, I have…

    Read More

    Dave J

    Dave J

    I own a construction company; as a result, I have a small fleet of neglected trucks. Since switching to Allegiance Automotive my maintenance costs have gone down and my down-time due to service has gone down. They are efficient, trustworthy, and good. I recommend them to anyone.

    Brady V.

    User Image

    From the Blog

    Classic Volkswagen Beetle parked in an autumnal setting in Bath, UK.

    Classic Car Restoration for Beginners

    There are a lot of considerations one needs to make when even thinking of restoring a classic car into mint condition. However, things get more complicated if you are a beginner. Classic car restoration for beginners is not exactly a piece of cake, but lucky for you, we have some tips that might help you […]

    Read More

    Tips to Clean your Car Engine

    What Are the Benefits of a Diesel Truck?

    There are several factors one needs to consider when buying a pickup truck. The biggest factor while making this decision is considering the difference between gasoline and diesel. Both come with their own sets of pros and cons that you should research before making your purchase. However, ultimately, it is diesel engines that offer much […]

    Read More

    Classic Volkswagen Beetle parked in an autumnal setting in Bath, UK.

    How to Keep a Classic Car in Mint Condition

    You finally have it. The car of your dreams. Now that you’ve gone through classic car restoration, there is one last thing to worry about: How to keep a classic in mint condition? Owning a classic car is truly a never-ending cycle: maintenance, love, repair, love, and maintenance, rinse, wax repeat. Let’s talk about how […]

    Read More

    Request an Appointment

    Call 303-938-9454 or fill the form below







      Comments/Questions: