Truck Fleet Repair Services in Austin, TX
Downtime costs money. We keep your whole fleet running with fast diesel repair — engine, transmission, brakes, electrical, tires, and DOT inspections — plus on-site service at your location for business customers.
Reliable repair for your whole fleet
Modern Diesel keeps commercial fleets on the road with diesel repair on every class of truck — light-, medium-, and heavy-duty — plus the trailers behind them. Experienced technicians, a fully equipped shop, and a focus on fast turnaround so your trucks spend less time in the bay and more time earning.
What we handle
- Diesel engine diagnostics and repair
- Transmission service and brake work
- Electrical troubleshooting and tire replacement
- Cooling system, DPF, DEF/SCR, turbo, and injector faults
- Truck and trailer tire replacement, mounting, balancing, and alignment
- Annual DOT/FMCSA inspections and emissions
- On-site diagnostics and repairs at your location for business customers
Fleet repair by industry
A box truck on a delivery route, a waste truck missing pickups, and a contractor's diesel pickup towing every day all fail differently. We build the repair path around the duty cycle, then connect the truck back into a maintenance program so the same fault does not keep returning.
- Moving company fleet maintenance — box trucks, liftgate-equipped vehicles, trailers, and busy-season PM
- Waste and sanitation fleet maintenance — route trucks, roll-offs, brakes, cooling, and priority scheduling
- Event production fleet maintenance — gear haulers, box trucks, trailers, and concierge pickup
- Construction and trade fleet maintenance — diesel pickups, service trucks, trailers, and compact equipment
- Delivery and box-truck fleet maintenance — Isuzu, Hino, Freightliner, Sprinter, step vans, DPF and brake wear
- Sprinter and cargo van fleet maintenance — diesel cargo vans, PM, diagnostics, and fleet support
Repairs, or a full maintenance program?
This page is about repairs — bring us a truck, or a yard full of them, and we fix it. If you'd rather hand off the whole maintenance program — concierge pickup & delivery, scheduled preventative maintenance, and end-to-end fleet management with the FleetGood portal — that lives on our fleet & business accounts page. Have your own fleet manager? We back up in-house teams too — see fleet maintenance support.
Why Modern Diesel
A Christian, veteran-owned shop with a fully equipped facility serving the Greater Austin Area (Travis, Bastrop, Williamson, Hays). We work closely with fleet managers, communicate clearly, and keep your trucks on the road and your business moving. Explore our fleet maintenance & management services or call our fleet team.
Common questions
Do you repair fleet trucks in Austin?
Yes. Modern Diesel repairs light-, medium-, and heavy-duty fleet trucks in Austin, including diesel diagnostics, engines, transmissions, brakes, tires, electrical faults, trailers, and DOT inspection corrections.
Can repairs happen at our location?
Yes, for fleet-account customers. We handle diagnostics, scheduled PM, and many repairs at your yard by appointment; bigger jobs move into our shop where lifts, parts, alignment, tires, and multiple technicians are available.
Is this different from fleet maintenance?
This page is for repair work when a truck has a fault or is down. Preventive maintenance and full fleet management live under a fleet account, where PM, inspections, pickup and delivery, and FleetGood tracking are scheduled ahead.
What fleet types do you support?
We support moving, waste, event production, construction, delivery, box-truck, Sprinter, cargo van, trailer, and diesel equipment fleets across the Greater Austin Area.
Ready when you are.
Drop by the shop at 2900 N FM 973, Austin, TX 78725 or call and we’ll get you scheduled.