A breakdown can bring deliveries, construction projects, and business operations to a standstill. Tri-State Diesel Repair proudly provides dependable truck repair in Franklin, NH, helping commercial drivers and fleet operators stay productive with professional diagnostics, diesel engine repairs, preventative maintenance, and responsive roadside assistance. Our experienced technicians work efficiently to reduce downtime and restore your truck's performance.
Whether you visit our fully equipped repair shop or need mobile truck repair in Franklin, our team delivers the same high standard of workmanship and customer service. From owner-operators to large commercial fleets, businesses throughout the Franklin area rely on Tri-State Diesel Repair for honest recommendations, quality repairs, and dependable support whenever their trucks need attention.
Why Choose Tri-State Diesel Repair in Franklin, NH?
Tri-State Diesel Repair has been serving New Hampshire's commercial trucking industry since 2017, providing trusted diesel repair, fleet maintenance, and heavy-duty truck services. Founded by military veteran Seth Bubar, our company is built around reliability, transparency, and doing every repair the right way. We understand that every hour a truck sits idle impacts your business, which is why we focus on efficient diagnostics and lasting repairs instead of temporary fixes.
Our service extends beyond the repair shop. With fully equipped mobile service vehicles, we provide on-site repairs throughout Franklin and surrounding communities whenever possible. Whether you need scheduled fleet maintenance, emergency roadside assistance, or a skilled diesel mechanic near Franklin, NH, our team is committed to keeping your commercial vehicles operating safely and efficiently.
Frequently Asked Questions
1. How quickly can you respond to roadside truck repairs near Franklin, NH?
Response times depend on technician availability and your location, but we make every effort to dispatch a mobile technician promptly to minimize your downtime and get your truck moving again.
2. Do you repair diesel trucks from all manufacturers?
Yes. Our technicians service most major diesel truck makes and models, performing everything from engine diagnostics and brake repairs to suspension work and electrical troubleshooting.
3. Is preventive fleet maintenance worth the investment?
Absolutely. Routine maintenance helps identify wear before it becomes a costly failure, extends vehicle lifespan, improves reliability, and reduces unexpected downtime across your fleet.
4. Can you perform repairs at my business location?
In many cases, yes. Our mobile service trucks are equipped to complete a wide variety of repairs at customer locations, job sites, distribution centers, and fleet yards throughout the Franklin area.
5. What makes Tri-State Diesel Repair different from other truck repair shops?
We combine experienced certified diesel technicians, mobile repair capabilities, honest communication, and personalized customer service. As a family-owned business, we focus on building lasting relationships by delivering dependable repairs and responsive support every time.
Our Service Area - Serving All Neigboring Areas in Lakes Region

Tri-State Diesel Repair is a veteran-owned truck and trailer repair company based in Belmont, NH, offering expert mobile diesel repair, fleet maintenance, and roadside assistance across Lakes Region NH Trusted. Fast.

