Affiliations and Certifications
Trinidad, CO's Trusted Auto & Diesel Repair Experts
Family-owned and operated, ER Auto & Diesel is your go-to local repair shop, proudly serving Trinidad, Southern Colorado, and Northern New Mexico. Located at 1104 E. 9th Street, we offer high-quality repairs for everything from daily drivers to heavy-duty trucks, emergency vehicles, trailers, and equipment. With 24/7 mobile service, expert diagnostics, and a commitment to honest, detailed work—you can count on us wherever and whenever you need.
- TIA Certified
- Financing Available
- ASE Master Technician
- Fire Apparatus Certified Technician
- Carshield Authorized Repair Facility
- 3-Year / 36,000-Mile Nationwide Warranty
Our mission is to provide exceptional customer service, honesty, & accurate work.
Mobile Auto & Tire Services For Semi Trucks
At ER Auto & Diesel, LLC, we know breakdowns don’t follow a schedule. That’s why we offer reliable 24/7 tire replacement and mobile auto repair services wherever you are in Trinidad, CO. Whether you’re stuck on the roadside or need emergency tire assistance, our skilled technicians are always on call to get you back on the road safely and quickly.
Call us to discuss any urgent or scheduled auto services you might need. Our technicians are ready to come to your doorstep whenever you need them!
We Sell & Service Tires For All Vehicles
Whether you need tire services like balancing and replacement, or are looking to buy new tires, ER Auto & Diesel, LLC has got you covered. We stock all popular tire brands and can source your preferred tires based on your requirements. Simply get in touch with our team or book your appointment to get started.
ER Auto & Diesel Keeping Southern Colorado Running—One Auto Repair at a Time
Expertise You Can Trust
At ER Auto & Diesel, LLC, our ASE Certified Master Technician brings over a decade of professional experience in both auto and diesel repair. From everyday drivers to heavy-duty trucks and emergency vehicles, we deliver expert diagnostics and high-quality service you can rely on.
Transparent & Honest Communication
From your first call to the final repair, we prioritize clear and honest communication. We offer upfront estimates, detailed service explanations, and fair, competitive pricing—so you always know what to expect.
Convenient Mobile Repairs – 24/7 Service
We know how valuable your time is. That’s why ER Auto & Diesel offers 24/7 mobile auto and diesel repair services across Trinidad, CO, Southern Colorado, and Northern New Mexico. Whether you're at home, work, or stranded on the roadside, we come directly to you—no towing needed.
Committed to Your Satisfaction
At ER Auto & Diesel, LLC, customer satisfaction is our top priority. As a family-owned and operated repair shop, we take pride in delivering reliable, detail-focused service with a personal touch—because your trust means everything.
24/7 Mobile Auto & Diesel Repair in Trinidad, CO
Experience the convenience and reliability of ER Auto & Diesel, LLC – your trusted partner for on-site auto, diesel, and fleet repair in Southern Colorado and Northern New Mexico. Contact us today to schedule an appointment or learn more about our services.
Commercial Truck/Trailer Repairs
Expert repairs for commercial trucks and trailers to keep your fleet running safely and efficiently.
24 Hour Mobile Service
Day or night, we come to you with fast, reliable mobile repair service across Southern Colorado.
Oil Change and Inspections
Stay road-ready with routine oil changes and thorough multi-point inspections for all vehicle types.
Auto & Diesel Truck Repairs
From daily drivers to heavy-duty trucks, we handle all repairs with precision and care.
Easy, flexible payment plans now offered at ER Auto & Diesel
Our Testimonials
Fast and efficient service. Rico was very knowledgeable, and provided great informative feedback about my vehicle. Helped me and my family feel safe getting back on the road to finish our road trip. Roadside provided at the gas station on a Sunday. Thank goodness for Rico and ER Auto & diesel, LLC.
Words aren’t enough but I want to express how very grateful I am to ER Auto&Diesel for working on my Land Rover. I was not sure how I was going to get my vehicle fixed when it wouldn’t go out of gear from drive to park and Rico was referred to me. Definitely an honest person with lots of knowledge for European and American vehicles. Great communicator and doesn’t leave you out of the loop! Definitely will only go to Rico and team for my vehicle needs!
Rico is one of the most humble mechanics I have ever met. His work ethics were surely more than satisfactory. I recommend him to anyone that wants the job done right the first time. Thank you Rico and God bless you brother.
Rico, an ASE Certified Mechanic, is professional and honest. These are traits not too many mechanics have these days. He was very thorough in fixing my car. After talking to him for awhile, I could tell he knew what he was doing. His willingness to explain the situation to me, showed me how dedicated he is. He definitely provided Automotive Service Excellence (or ASE).
Great work and fair price!!
Rico is a great guy, and really goes the extra mile. He treats the customer fairly and is affordable. One of the best mobile repair guys in his area. Highly recommend.
The team at ER Auto and Diesel have provided me with phenomenal customer service. Their communication throughout the technical service process has been prompt and thorough. Rico did an excellent job on my truck service and inspection and the rate charge was fair. I look forward to working with ER Auto and Diesel for all my diesel equipment service needs.
Expert Auto Service for Every Vehicle Make & Model
Our Process
Can't come to us? We can come to you!
Proudly serving the Trinidad community,
Southern Colorado & Northern New Mexico.
Request & Estimate Approval
Contact ER Auto & Diesel to request a quote for shop or mobile service. Once approved, we prepare to get your vehicle back on the road quickly.
Scheduling & Service Location
We schedule your service at our Trinidad shop or coordinate a convenient time and location for mobile repairs across Southern Colorado.
Inspection & Digital Report
Our certified technician performs a thorough inspection before starting any work. You’ll receive a detailed digital report outlining any findings.
Repairs & Follow-Up
Once you approve the work, we carry out the repairs with precision. If additional work is required, we’ll schedule a follow-up at your convenience.
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FAQs
ER Auto & Diesel, LLC holds certifications such as ASE Master Technician, TIA Certified, and Fire Apparatus Certified Technician.