Diesel Mechanic Services

General Diesel Repair Services in San Antonio & Austin, TX

Experience top-tier diesel repair solutions at Austin Fleet Services, your destination for heavy-duty vehicle maintenance. With our skilled technicians and state-of-the-art facilities, we ensure the optimal performance and longevity of your diesel-powered vehicles.

Diesel mechanic performing general diesel repairs from shop in San Antonio, TX

Diesel Repairs and Services

We are dedicated to delivering exceptional diesel repair and maintenance services tailored to meet the needs of heavy-duty truck drivers and fleet managers. Our comprehensive range of offerings includes:

  • Engine Diagnostics and Repair: Utilizing advanced diagnostic tools and techniques, we accurately identify and resolve engine-related issues to restore optimal performance and efficiency.
  • Fuel System Services: From fuel filter replacements to fuel injector cleaning, we optimize your vehicle's fuel system to enhance combustion and fuel efficiency.
  • Exhaust System Maintenance: We offer exhaust system inspections, repairs, and component replacements to ensure compliance with emissions standards and minimize environmental impact.
  • Coolant System Repairs: Our technicians address cooling system issues promptly, preventing overheating and engine damage while maximizing engine lifespan.
  • Transmission Services: Whether it's routine maintenance or major repairs, we handle all aspects of transmission service to keep your vehicle operating smoothly and reliably.

Reach Out Today!

For professional diesel repair services or inquiries about our offerings, contact Austin Fleet Services at (737) 256-7770. Our friendly team is ready to assist you and ensure the optimal performance and reliability of your diesel-powered vehicles.

Areas We Serve

In addition to our locations in San Antonio and Austin, we offer services within a 50-mile radius of each shop, including the following areas in Texas: Pflugerville, San Marcos, Cedar Park, Round Rock, Georgetown, Elgin, New Braunfels, Schertz, Seguin, Devine, Pleasanton, Floresville, and many more. We offer expert mobile repairs and roadside assistance for those located in these areas.


What types of diesel engines do you service?

We specialize in servicing a wide range of diesel engine brands, including Cummins, Caterpillar, Detroit Diesel, International, Volvo, and many more.

What types of diesel vehicles do you service?

Our expertise extends to various diesel vehicles, including heavy-duty trucks, medium-duty trucks, fleets, buses, trailers, and other commercial vehicles commonly used in the transportation industry.

How can I get in touch?

Getting in touch with us is easy! You can simply dial (737) 256-7770 to speak with our knowledgeable team and schedule your diesel repair service today. Alternatively, you can visit one of our convenient shop locations for personalized assistance.

Why Choose Austin Fleet Services?

We can come to you!
Our Patented Service Vehicles are specially designed and equipped to perform 85% of all vehicle maintenance and repair requirements on site.


Experienced Diesel Mechanic Services

Our comprehensive range of heavy-duty diesel mechanic services include preventive maintenance, diagnostics, diesel engine repair, brake repair, fleet management, and more. Get in touch with Austin Fleet Services to schedule the services you require!

Diesel mechanic performing reefer trailer repairs in San Antonio, TX

Reefer Trailer Repair

We offer top-notch reefer trailer solutions at Austin Fleet Services.

Heavy-duty diesel mechanic performing bus repair services in Austin, TX

Bus Repair

We ensure that your buses remain roadworthy, delivering passengers safely and reliably mile after mile.

Truck welding service in Austin, TX

Truck Welding

Discover top-notch truck welding services at Austin Fleet Services.

Diesel mechanic performing general diesel repairs from shop in San Antonio, TX

General Diesel Repair

Experience top-tier diesel repair solutions at Austin Fleet Services.

Mobile diesel mechanic performing emergency roadside assistance in Austin, TX

Roadside Assistance

We offer comprehensive roadside truck repair services to keep your fleet moving, no matter where you are.

Mobile diesel mechanic performing mobile truck repair services in San Antonio, TX

Mobile Truck Repair

We offer comprehensive mobile truck repair services designed to provide quick fixes wherever you are.

Diesel mechanic performing trailer repair services in Austin, TX

Trailer Repair

We ensure that your trailers remain in optimal condition, keeping your business moving.

Diesel mechanic performing heavy equipment repair services in San Antonio, TX

Heavy Equipment Repair

We specialize in top-notch heavy equipment repair services to keep your machinery operating at peak performance.

Diesel mechanic performing preventive maintenance services on semi truck fleet in San Antonio, TX

Preventive Maintenance

We specialize in proactive maintenance solutions to meet the needs of your fleet.

Diesel mechanic performing DOT inspection on semi truck fleet in Austin, TX

DOT Inspection

Ensure the continued safety and compliance of your heavy-duty vehicles with our thorough DOT inspections.

Don't Take our word for it —
Read our reviews

"William is a awesome guy. He did a great job. Called about the tandem axle not sliding and helps me fixed some other little issue. I definitely recommend austin fleet services"

Jackson Epalle

"These guys are great, had an emergency with a DEF pump on a black Friday, only shop that picked up the phone, took my driver in immediately and didn't give me the runaround like most do now. I asked not to diagnose anything and just change the pump. Truck back on the road in 3-4 hours and saved us at least 3 days waiting for another shop to open. Definitely coming back here next time our  trucks are in the area!"

Vlad Supron

"Outstanding experience with AFS and George, their knowledgeable mechanic who replaced my valve cover gasket. My vehicle is running smoother than ever. Thank you AFS!"

Bianca Martinez

Contact Us

Get in touch with Austin Fleet Services today to schedule service in-shop in San Antonio or Austin/Pflugerville, or via mobile service in the surrounding areas.