Diagnostics & Troubleshooting
Pro scan tools to pinpoint engine, electrical, and sensor issues on-site.
Our Services
Advanced diagnostics, repairs, and maintenance - performed in your driveway, workplace, or roadside.
Oil Change & Fluids
Quick, clean service with proper weights and OEM-recommended fluids.
Battery Testing & Replace
Load testing, charging system checks, and on-the-spot replacement.
Brakes - Pads/Rotors
From squeals to full brake jobs using quality parts and torque specs.
Tire Repair & Swaps
Puncture repairs, rotations, and spare installs day or night.
Roadside Assistance
Lockouts, jumpstarts, fuel delivery - 24/7 anywhere nearby.
Billings
Bozeman
Livingston
Belgrade
Laurel
Why Choose Us?
Certified, experienced, and built for convenience. Our lead mechanic, Xavier, brings the shop to your doorstep across Billings, Bozeman, and surrounding Montana towns. With transparent rates, quality parts, and 24/7 availability, you won't be stranded.
- Same-day appointments when available
- OEM-grade parts & torque specs
- Upfront estimates - no surprises
Customers Notice the Difference
Fast responses, clean work, and honest pricing.
"Xavier was at my house within an hour after my truck wouldn't start. He diagnosed the alternator issue and had it replaced the same day. Saved me a tow and a trip to the shop."
"My check engine light was on, and the car was running rough. They pulled the codes and found a bad ignition coil, replacing it right in my office parking lot. Incredibly convenient!"
"So much better than dealing with a dealership. The pricing was fair and explained clearly before any work started. Honest service is hard to find, and ONCALL has it."
Straightforward Pricing
No surprises - labor billed in fair increments, parts at market rates.
Diagnostics Visit
$89+
Scan + inspection. Applied toward repair if completed same visit.
Standard Labor
$119/hr
Transparent, per-job quotes before we turn a wrench.
Roadside / After-Hours
$149/hr
Priority response outside standard daytime hours.
Get in Touch
Fastest response by phone for emergencies.
Contact Info
Phone: 406-894-3490
Email: info@oncallmechanics.com
Hours: 24/7 Service
For emergencies, call for the fastest response.
Request Service
Frequently Asked Questions
Do you really operate 24/7? ?
Yes - call anytime. After-hours work may include priority rates.
What areas do you cover? ?
Billings, Bozeman, Livingston, Belgrade, and Laurel. Ask about other towns nearby.
Can you do full brake jobs on-site? ?
Absolutely - pads, rotors, fluid, and proper torque specs where the vehicle is.