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Business Details
50+ Years
experience
Your Trusted Auto Repair Experts in Littleton, CO
Keller Bros has been a trusted name in automotive repair for 50 years, serving Littleton, CO and surrounding areas. Our ASE-Certified technicians combine technical expertise with a commitment to ethical service, ensuring every repair is performed with transparency and integrity. As a family-owned business since 1974, we prioritize customer education over sales, empowering clients with detailed explanations of their vehicle's needs. Our team maintains rigorous standards, holding certifications like ASE Master Technician and Accredited Automotive Manager, while consistently earning recognition as Colorado's top auto repair shop.

With a 3-year/36,000-mile warranty on parts and labor, we guarantee lasting solutions for domestic, import, and fleet vehicles. Our dedication to community service and ethical business practices has earned us awards including the Colorado Ethics in Business Alliance Award and Better Business Bureau Gold Star Certificate.
Services
Vehicle A/C Repair Vehicle Brake Repair Fleet Services Oil Changes & Maintenance Tune-ups & Preventative Maintenance Computer Diagnostics Brake Replacement Suspension Repair Transmission Services Battery Replacement
Details
  • Year established: 1974
Highlights and features
  • We have 50 years of experience in automotive repair.
  • Our team includes ASE-Certified Master technicians.
  • We guarantee all work with a 3-year/36,000-mile warranty.
  • We prioritize customer education over sales.
  • We've been named Colorado's Best Auto Repair Shop six years consecutively.
Associations and certifications
  • ASE Certified
  • Better Business Bureau Gold Star Certificate
What people say
Amazing work Incredible repair job Educated about repairs Shop I can trust Car drives smoothly
Services
Vehicle A/C Repair
Our ASE-certified technicians diagnose and repair air conditioning systems, including refrigerant flushes, belt replacements, and leak repairs. We ensure optimal cooling performance for Colorado's hot summers using specialized equipment and manufacturer-recommended procedures. Our 3-year warranty covers all A/C repairs.
Vehicle Brake Repair
We provide comprehensive brake inspections and repairs, including pad replacement, rotor resurfacing, and ABS diagnostics. Our technicians use advanced tools to assess brake condition and recommend necessary repairs while explaining all options to customers.
Fleet Services
Specialized maintenance programs for commercial fleets, including scheduled inspections, DOT compliance checks, and 24/7 emergency support. Our ASE-certified team services light to medium-duty vehicles with pickup/delivery options and computerized tracking systems.
Oil Changes & Maintenance
Full-service oil changes using premium lubricants, including filter replacement and multi-point inspections. Our maintenance packages follow manufacturer guidelines and include digital records tracking for optimal vehicle performance.
Computer Diagnostics
Advanced diagnostic testing using OEM tools to identify check engine light issues and electronic system malfunctions. Our technicians interpret diagnostic codes and perform component testing to provide accurate repair recommendations.
People
Terry Keller
Owner
ASE Master Certified Technician with 50 years in automotive repair, Terry founded Keller Bros in 1974. He holds an Accredited Automotive Manager Certification and was named Colorado Technician of the Year in 2007.
Margret Keller
Owner
Co-founder with Terry since 1974, Margret has been instrumental in establishing the company's ethical service standards and customer education philosophy that defines Keller Bros' approach to automotive repair.
Questions
What services does Keller Bros offer?
We provide full-service automotive repair including diagnostics, brake systems, A/C repair, oil changes, transmission services, and fleet maintenance for domestic and import vehicles.
Are your technicians certified?
All our technicians are ASE-certified, with several holding Master Technician credentials and specialized training in modern automotive systems.
What are your business hours?
We're open Monday-Friday from 7:00am to 6:00pm. Appointments are available, but walk-ins are welcome for urgent needs.
Do you offer warranties on repairs?
Yes, we provide a minimum 3-year/36,000-mile warranty on all parts and labor, with some components covered by extended manufacturer warranties.
Can you service fleet vehicles?
We specialize in fleet maintenance with customized service programs, computerized tracking, and after-hours service options for business clients.
How do you handle customer communication?
Our team explains all repairs in detail, provides digital photos of work performed, and obtains customer approval before any service begins.