Preventative maintenance, diagnostics & repairs for cars, trucks & medium/heavy-duty trucks. Mobile service & towing support for drivers and fleets. Serving Montgomery County & the DC Metro.
Fast response • Fair pricing • Reliable workmanship.
Nearly 30 Years of Quality Auto & Truck Repairs
Maintenance & Oil
Factory schedule maintenance, oil change service to spec, OEM filter, fluids topped, light reset.
Brake Repair Services
Full brake inspection with Pads/rotors, hydraulics, calipers/hoses, ABS diagnostics and repair.
Electrical Diagnostics
Detailed testing for check-engine lights, misfires, no-starts, battery service and more.
Wheel Alignments
Computerized 2-/4-wheel alignment improves tracking, steering feel, and tire wear.
A/C & Cooling Systems
A/C leak test, recharge, components; radiators, pumps, thermostats—cold cabin, stable temps.
Timing Belts
Timing belt replacement, Belt, tensioners/idlers, water pump when required.
Transmission Flush
Transmission fluid exchange, pan/filter service, leak inspection for all makes and models.
Deisel Diagnostics & Repair
Med/Heavy duty, engines, fuel, turbo, EGR/DPF/SCR after treatment, drivability
Fleet, Deisel, Medium & Heavy Duty Truck Repair
Keep your trucks working and your routes on schedule
Medium & Heavy-Duty truck repair, diesel diagnostics, fleet maintenance, roadside assistance & heavy-duty towing in Gaithersburg, Montgomery County & DC Metro.
- Diesel Diagnostics & Repair (medium/heavy)
- Fleet PMs, inspections & DOT-ready service
- Mobile roadside assistance (jump starts, belts/hoses, minor repairs)
- Towing available; heavy-duty towing coordination
- Brake, suspension & steering
- Cooling, charging & aftertreatment support
- Box trucks, step vans, reefers, day cabs, tractors, RVs
We guarantee our auto, deisel, and truck repair services.
About Us
For nearly 20 years, Auto Check & Inspection has helped drivers, owner-operators, and fleet managers keep vehicles on the road and costs under control. From oil changes and brakes to diesel diagnostics and roadside repairs, our team focuses on clear communication, quality parts, and dependable turnaround times. Whether you need scheduled maintenance, an urgent mobile repair, or help coordinating a tow, we’re ready to get you rolling, safely and quickly.
Our Commitment
Based in Gaithersburg, MD, and serving Montgomery County and the Greater Washington metro area, we deliver trusted auto and truck repair backed by straight forward fair pricing, and ASE-Certified technicians who stand behind their work.