Since 2004, Stonum Automotive has provided motorists in the Longmont, CO 80501 area with comprehensive auto repair services that include General Services, Car & Truck Care, Undercar Services, Engine & Transmission, Engine Maintenance, Transmission Services, Heating and Cooling Services, Electrical Services, Electronic Services, Miscellaneous Services and Towing. Our goal is to offer the best services available at affordable prices to get you back on the road in no time. We have won several BBB Gold Star Awards and were recently voted the #1 Shop in Longmont by the readers of the Longmont Times Call newspaper! You'll be hard-pressed to find the same level of expertise that our auto mechanic specialists provide! We have years of experience working on both domestic and import vehicles of all makes and models and can work with you to find cost-effective repair and maintenance alternatives. For a high-performing vehicle, trust Stonum Automotive with your car, truck, or van. To learn more about the services we offer, please contact us by phone at 303-485-9303 or send us an email. We also invite you to learn more about our dedication to you, our valued customer.
Alternators and Starters
Brake System Repair
Brakes and Mufflers only
Computer Diagnostic and Repair
Cooling System Diagnostic and Repair
Cooling System Flush
Drivetrain Service and Repair
Electrical System Diagnosis and Repair
Emissions System Diagnostic/Repair
Engine Performance and Tune-up
Fuel Injection Diagnosis and Repair
GM Factory Trained Specialist
General Repair (Aftermarket)
Headlamps and Vehicle Lighting
Heating and Air Conditioning
Napa Autocare Nationwide Warranty
New Tire Replacement
Oil Change Facility
Scheduled Factory Maintenance
Shock and Strut Replacement
Steering and Suspension
Timing Belt Service
Transmission Fluid Service
Used Car Evaluations
Most insurance accepted
Most extended Warranties accepted
Certifications & Memberships
97.5%would refer friends and family to us
The work is quality but seems like prices are higher all the time.
Have used Stonum for more than 10 years and always found them to be honest, reliable, and competent. Not the cheapest, but we've found them to be fair in their pricing and willing to stand behind their work.
I trust Dr. Cottrell with my vision assessment. He is knowledgeable, friendly and willing to take the time to answer any and all questions. The staff is also friendly and courteous. Good visit, no complaints.