Truck & Trailer Repair

Commercial truck & fleet repair, done right

Modern Diesel’s technicians work out of a fully equipped, state-of-the-art facility built to handle everything from routine fleet maintenance to complex heavy-duty repairs. Our team is trained across the systems that matter — engine and drivetrain diagnostics, air conditioning, brakes and suspension, exhaust and emissions, welding, and more — so every job is done to industry best practice.

What we service

• Heavy-, medium-, and light-duty diesel trucks
• Trailers — brakes, lights, suspension, and structure
• Vans, pickups, and mixed commercial fleets

Truck down? Here’s the fast path

We’re a repair shop, not a roadside service — we don’t run tow trucks and we don’t do roadside rescue. What we do is get a down truck into a bay fast. Call us, tell us what it’s doing and where it sits, and we’ll tell you straight whether it can be driven in, needs a tow you arrange, or — for business customers on a fleet account — qualifies for concierge pickup — we send a driver, CDL-licensed when the vehicle requires one. Down vehicles on a fleet account move to the front of the schedule, and we also offer on-site diagnostics and repairs at your yard by appointment for business customers.

A maintenance plan built around your fleet

Our fleet maintenance program matches managed maintenance to how your vehicles actually get used and to your budget. It pulls together preventative maintenance, safety inspections, and repairs — and for business customers, on-site fleet diagnostics and repairs at your location — so your fleet stays safe, compliant, and earning instead of sitting.

Warranty coverage is set with your service advisor at the time of service.

Why Modern Diesel

Established in 2015, we’ve grown into a trusted fleet partner across the Greater Austin Area (Travis, Bastrop, Williamson, Hays) by sticking to three things: professionalism, quality workmanship, and proactive maintenance. We’re a Christian, veteran-owned shop — teamwork, training, and current technology on every job.