EST. Bozeman, MT // Mobile Mechanic & Diesel Service 406-404-6315 // 6A–2A · 7 Days
Mobile Mechanic — Gallatin Valley, MT

We Come
To You.

Tires, brakes, oil, diagnostics, diesel, semi and heavy-equipment work — done right in your driveway, on the jobsite, or on the shoulder of the road. No tow bill. No waiting room. No runaround.

Hardline Automotive servicing a Ford F-350 diesel on-site in rural Montana
Available6A–2A · 7 Days

The Service
Menu

Full-service mobile work — gas and diesel, light-duty to Class 8 — brought to your driveway, jobsite, or roadside.

Oil Changes

  • Standard Gas
    Up to 5qt conventional or synthetic blend
  • Full Synthetic Gas
    Up to 5qt full synthetic, OEM filter
  • Light-Duty Diesel Diesel
    F-250, Ram 2500 · up to 10qt synthetic
  • Heavy-Duty Diesel Diesel
    F-350+, commercial · 13–15qt+
  • Semi Truck / Class 8 Diesel
    Big rigs & heavy commercial · serviced on-site

Tire Services

  • Mount & Balance
    Single tire, customer supplies tire
  • Full Set Mount & Balance
    4 tires, customer supplies tires
  • Tire Rotation
    4 tires rotated on-site
  • Oversized / ATV Tires
    35"+ tires

Brakes

  • Brake Pad Replacement
    Front or rear · on-site
  • Rotor Replacement
    Warped or worn rotors
  • Brake Inspection
    Pads, rotors, and lines checked
  • Brake Fluid Service
    Flush and replace

Diagnostics & Add-ons

  • OBD2 Diagnostic Scan
    Check-engine light, fault codes
  • Pre-Purchase Inspection
    Full inspection report, ~30 min
  • Air Filter Replacement
    Engine or cabin filter
  • Battery Test & Replacement
    Test and replacement

Every job is mobile — we come to you across the Gallatin Valley. Get a free quote →

Fleet Accounts

Keep The Fleet Moving

Downtime in the yard costs you money. We service your trucks and equipment on-site, on a schedule that fits your operation — construction, ranching, landscaping, trades, and trucking. One call, no lot full of iron waiting on the shop.

Semis, big rigs & heavy machinery welcome — Class 8 diesel & equipment serviced on-site, no shop bay required.
Set Up a Fleet Account
3–5
Small Fleet
Scheduled oil changes + tire checks
Get a Quote
6–10
Medium Fleet
Scheduled service + tire checks + priority scheduling
Get a Quote
11+
Large Fleet
Custom schedule, dedicated account manager, priority always
Get a Quote
Hardline Automotive mechanic working under a vehicle on-site in Montana
On-Site · Gallatin Valley
Hardline Automotive enclosed mobile service trailer — the rolling shop
The Rolling Shop
Why Hardline

Built For
Montana
Drivers

We built this business around what Montana drivers actually need — fast, honest, and on your terms.

01

We Come To You

Your driveway, jobsite, or roadside. No towing required, and no sitting in a waiting room while the day gets away from you.

02

Fast Response

Available 6AM–2AM, seven days a week. When you're stuck, we move — because a truck that isn't running isn't earning.

03

Fair, Upfront Pricing

No surprise upsells and no pressure. What we quote is what you pay — every single time.

04

The Rolling Shop

A fully-stocked enclosed service trailer and shop-quality tools, brought right to your location.

05

Local & Insured

Bozeman-based and fully insured. We're your neighbors, not a national chain — book with confidence.

Get Started

Book A
Service

Fill out the work order and we'll confirm within a few hours. Need it now? Call or text.

Phone / Text406-404-6315 Emailservice@hardlineautomotives.com
HoursMon–Sun · 6AM–2AM
Work OrderFORM · HL-01

We'll confirm within a few hours. For urgent service, call or text directly.

Phone / Text

406-404-6315

Hours

Mon–Sun · 6AM–2AM

Service Area

Bozeman · Belgrade · Manhattan · Three Forks · Livingston

Call / Text Book Now