Affiliations and Certifications
Welcome to ER Auto & Diesel, LLC
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.
Why Choose Us?
- ASE Master Technician
- TIA Certified
- Fire Apparatus Certified Technician
- 3-Year / 36,000-Mile Nationwide Warranty
- Financing Available
Our mission is to provide exceptional customer service, honesty, & accurate work.
ER Auto & Diesel, LLC Keeping Southern Colorado Running—One 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/Inspections
Stay road-ready with routine oil changes and thorough multi-point inspections for all vehicle types.
Auto & 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
Follow us on Facebook
FAQs
We service everything from daily drivers to diesel trucks, trailers, emergency vehicles, and heavy equipment. No job is too big or small.
Yes! We offer 24/7 mobile repairs across Trinidad, Southern Colorado, and Northern New Mexico for your convenience.
Absolutely. Our lead technician is ASE Master Certified, TIA Certified, and Fire Apparatus Certified.
We’re located at 1104 E. 9th Street, Trinidad, CO. Stop by or call us anytime for an appointment.
We back our work with a 3-year/36,000-mile nationwide warranty for peace of mind.
Yes, we offer flexible financing options to help you manage repair costs with ease.
You can call us directly, stop by the shop, or message us through our website to book service.
Yes, we specialize in servicing commercial trucks, trailers, and fleet vehicles with fast turnaround.
Our shop is open Monday to Friday, and mobile services are available 24/7.
Appointments are recommended, but we also respond to emergency calls—just give us a call!