Keep Your Fleet Moving Forward

Mobile diesel repair delivered where you need it, when you need it.

Repair Diesel Equipment Without the Tow

On-site service built around your schedule and location

Exfil Mobile Diesel Solutions brings fully equipped mobile repair to semi trucks and trailers across Claremont, Fontana, Santa Ana, Moreno Valley, Los Angeles, and Long Beach. When equipment goes down, you shouldn't have to lose hours arranging towing or waiting at a shop. A certified technician arrives where your truck is parked, ready to diagnose and resolve the issue.

Clean Truck Check

General Diesel Repair

Truck Fluid Replacement

Computer Diagnostics

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You'll know what's happening from the moment a technician arrives. The repair scope is reviewed before work begins, so you understand the timeline and what's required. Whether it's a brake issue, coolant leak, HVAC malfunction, or suspension concern, the focus stays on getting you back on the road with minimal interruption.


Exfil Mobile Diesel Solutions is veteran owned and owner operated, with over 8 years of hands-on diesel repair experience. The business serves commercial fleets and owner-operators who need dependable support for both scheduled maintenance and urgent breakdowns. Every call is handled with accountability and attention to detail.



Reach out to arrange mobile service or discuss your repair needs.

Depend on Experienced Diesel Technicians
Certified mechanics bring proven expertise directly to your equipment.
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A person in a plaid shirt repairs the open engine compartment of a large yellow semi-truck inside a garage.

How Mobile Repair Works for You

Mobile diesel service revolves around minimizing downtime and maximizing convenience.

Instead of coordinating a tow truck, finding an available bay, and waiting in line, you receive diagnostics and repairs at your yard, terminal, or roadside location. The approach is straightforward: assess the problem, outline the required work, and complete the repair efficiently.


Each service call follows a methodical process. Technicians arrive with the tools and diagnostic equipment needed to identify issues accurately. Once the problem is confirmed, you're informed of the necessary repairs and estimated timeframe. This structured method helps you plan around the repair rather than losing unpredictable hours to shop delays.


Mobile diesel repair supports a range of operational needs, including:

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Complete diagnostics to identify mechanical and electronic faults before they escalate

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Brake and suspension work performed on-site with certified expertise

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Fluid replacement and coolant system service that keeps engines running at proper temperatures

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Emergency response available around the clock for breakdowns that can't wait until business hours

Contact Exfil Mobile Diesel Solutions to schedule service or request immediate assistance.

A semi-truck with a large trailer driving on a highway during a vibrant purple and orange sunset.

Dependable Service Built on Experience

Exfil Mobile Diesel Solutions operates with a foundation of technical skill and professional responsibility. The business is licensed and insured, with mechanics certified in Freightliner and Cummins Diesel systems. Serving the Los Angeles region means understanding the demands placed on commercial trucks operating in high-traffic corridors and tight delivery windows.



Each repair is approached with care for your equipment and respect for your time. Whether addressing HVAC failures during hot weather or handling DPF regeneration issues that impact fuel economy, the work is completed to restore full function. The goal is simple: deliver reliable results you can count on, one repair at a time.

Get in touch to discuss your fleet's repair and maintenance requirements.

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Areas We Serve

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Claremont, CA

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Moreno Valley, CA

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Fontana, CA

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Los Angeles, CA

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Santa Ana, CA

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Long Beach, CA

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Big thank you to Exfil Mobile. My buddy and I were stranded due to a leaking air brake chamber that was keeping the parking brake applied. Exfils mobile tech came out rather quickly and was able to diagnose the issue and change out the parts in a timely manner. Who knows how long we would have been stranded if Exfil hadn’t shown up. Would definitely recommend them to any trucker that needs roadside assistance. Thank you Exfil Mobile Diesel Solutions.

- Zachary Z.

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I had an amazing experience here! The mechanic was honest, knowledgeable, and super friendly. He took the time to explain everything in a way I could understand and didn’t try to upsell me on anything I didn’t need. The service was quick, the price was fair, and my car runs better than ever. You can really tell he cares about his customers and takes pride in his work.

Highly recommend to anyone looking for a trustworthy mechanic.

- Ranim E.

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Highly Recommend Exfil Mobile Diesel Solutions!


I’m leaving this review on behalf of my uncle, who drives a fleet truck and recently ran into trouble on the road. He was stuck and needed urgent help, so I reached out to Exfil Mobile Diesel Solutions for him and I’m so glad I did. From the very first call, they were responsive, professional, and ready to help right away.


I can’t say enough good things about Exfil Mobile Diesel Solutions! My uncle had a breakdown on the side of the freeway late at night, and they came through when no one else could. My uncle drives a small fleet truck for deliveries, and when his engine started acting up, he was stuck and totally stressed out.


Within 30 minutes, Exfil showed up, ran full computer diagnostics right there on the roadside, and figured out the issue fast. They had all the right tools and got my uncle back on the road the same night. Super professional, fair pricing, and you can tell they really know their stuff from oil and filter changes to full-on mechanical repairs.


What stood out most was how friendly and knowledgeable they were. They explained everything clearly and even checked my uncle’s air brake system and tires to make sure he’d make it safely to his next stop.


If you’re a driver or fleet owner, keep their number saved you’ll be glad you did. 24/7 service, fast response, and quality work. Thanks again to the Exfil team for saving my uncle’s night and his schedule!

- Jennifer R.