Longmont Auto Repair

A Full-Service Auto Repair and Maintenance Shop in Longmont, CO

DeMers Automotive is a full-service auto repair and service shop based in Longmont, Colorado. Since 1993, we have provided service to hundreds of satisfied customers across Boulder County and the surrounding areas.

tow truck

Tow Assistance

We can provide recommendations for towing companies if you need your car towed in for service.

shuttle service

Free Shuttle

If you need a ride after dropping off your vehicle, we have shuttle service at no charge.

water cooler

Air-Conditioned Lobby

Our lobby is air conditioned and has a water cooler to keep you cool while you wait.


Peace of Mind

We are a NAPA AutoCare center and provide a 36-month, 36,000 mile warranty that is honored nationwide.

Call now for service: ‭(303) 776-3666‬

demers automotive sign on main street in longmont

We’re conveniently located near 15th & Main in Longmont, Colorado:

1533 Main Street
Longmont, CO 80501

Map & Directions

Recent Blog Posts

From One Family To Another – New Ownership Announcement

From One Family To Another – New Ownership Announcement

We have some good news for all our loyal friends, neighbors, and amazing customers. As you know, my family and I have operated DeMers Automotive in beautiful Midtown Longmont for 34 years now. We have deep roots in the Longmont area and love this growing town. Myself,...

Get Your Car Road Trip-Ready Before Hitting The Highway

Get Your Car Road Trip-Ready Before Hitting The Highway

Due to restrictions on flying and other measures that make traditional vacations more difficult, many Americans are taking road trips this summer. If that's part of your plan, we highly recommend you bring your vehicle in for an inspection before putting a few hundred...

Engine Cooling System: 4 Common Leak Locations

Engine Cooling System: 4 Common Leak Locations

Although it may not often take center stage, your car's cooling system is an essential part of the car's operation. Your cooling system helps to maintain a safe operating temperature for your engine, ensuring both its efficiency and its longevity. Serious consequences...

Need Auto Repair or Service?

For basic questions about the types of services we offer, feel free to call us at ‭(303) 776-3666 or contact us online using our general contact form below.

Request an appointment for service online using our appointment request form. Tell us the date/time that you’d like to bring your car in for service and we will contact you to confirm a time that works.

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