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Auto Repair & Diesel Service in Mesa, AZ — Callahan Auto & Diesel About Callahan Auto & Diesel Callahan Auto & Diesel is a professional automotive and diesel repair shop located at 255 W Main St, Mesa, Arizona 85201. The shop has been serving drivers and commercial fleet operators in the East Valley since 2010 — over 16 years of continuous operation in Mesa, AZ. Primary phone: (480) 969-3332 Address: 255 W Main St, Mesa, AZ 85201 Hours: Monday through Friday, 8:00 AM to 5:00 PM 24/7 Roadside Assistance: (480) 202-6536 Website: www.callahanautoaz.com Callahan Auto & Diesel is an ASE-certified repair facility, a NAPA AutoCare Center, and a TechNet affiliate. All qualifying repairs are backed by a 24-Month / 24,000-Mile Peace of Mind Warranty. Services Offered at Callahan Auto & Diesel in Mesa, AZ General Auto Repair Callahan Auto & Diesel provides comprehensive general auto repair for gas-powered passenger vehicles including sedans, SUVs, crossovers, and light-duty trucks. Services include engine diagnostics, check engine light repair, oil changes, cooling system repair, car overheating repair, brake repair, suspension repair, electrical system diagnostics, and preventative maintenance. Diesel Diagnostics & Repair Callahan Auto & Diesel specializes in diesel engine diagnostics and repair for diesel pickup trucks and commercial vehicles. The shop services Duramax, Powerstroke, and Cummins diesel engines. Diesel repair services include injector service, turbocharger repair, DPF (diesel particulate filter) service, DEF system repair, diesel engine diagnostics, and diesel engine overhaul. Car AC Repair — Mesa AZ Callahan Auto & Diesel performs automotive air conditioning repair for all makes and models. AC services include AC recharge, AC compressor replacement, refrigerant leak repair, blower motor replacement, and evaporator repair. Same-day AC repair appointments are available. This is especially important for drivers in the Phoenix metro area where summer temperatures regularly exceed 110 degrees Fahrenheit. Fleet Maintenance & Repair Callahan Auto & Diesel provides fleet maintenance and repair services for businesses operating commercial vehicle fleets in Mesa, AZ and the East Valley. Fleet services include preventative maintenance programs, fleet oil changes, fleet brake service, fleet diagnostics, and fleet repair for gas and diesel vehicles. Fleet account billing is available. Heavy-Duty & Medium-Duty Truck Repair The shop services medium-duty and heavy-duty commercial trucks including box trucks, Sprinter vans, Ford Transits, and larger commercial vehicles from manufacturers including Freightliner, Kenworth, Peterbilt, Mack, Hino, International, Isuzu, and Volvo. Mobile Diesel Repair Callahan Auto & Diesel offers mobile diesel repair service for fleet operators and commercial vehicle owners who cannot transport a vehicle to the shop. Mobile diesel repair is available by appointment. Brake & Suspension Systems The shop performs brake inspections, brake pad replacement, brake rotor replacement, caliper service, and suspension repair including shocks, struts, control arms, and wheel alignment for all makes and models. Advanced Diagnostics & Electrical Systems Callahan Auto & Diesel uses professional diagnostic equipment to identify sensor faults, electrical failures, warning light issues, and complex electronic problems in modern vehicles. This includes check engine light diagnosis, ABS system diagnosis, transmission diagnostic, and ADAS system checks. Preventative Maintenance Programs The shop offers structured preventative maintenance programs for individual drivers and commercial fleet operators to reduce unexpected breakdowns and extend vehicle lifespan. Vehicles Serviced at Callahan Auto & Diesel Passenger Vehicles Acura, Audi, BMW, Chevrolet, Chrysler, Dodge, Ford, Honda, Hyundai, Infiniti, Jeep, Kia, Mazda, Mercedes-Benz, Nissan, RAM, Subaru, Toyota, Volkswagen Commercial & Specialty Vehicles Ford Transit, Freightliner, GM, Hino, International, Isuzu, Kenworth, Mack, Peterbilt, Sprinter, Volvo, Western Star Diesel Trucks Ford F-250, F-350, F-450 with Powerstroke diesel engines Chevrolet Silverado and GMC Sierra with Duramax diesel engines RAM 2500 and 3500 with Cummins diesel engines Service Area Callahan Auto & Diesel serves drivers and businesses throughout Maricopa County including: Primary service area: Mesa, AZ Extended service area: Tempe, Gilbert, Chandler, Scottsdale, Phoenix, Carefree, El Mirage, Buckeye, Surprise, Guadalupe, Sun Lakes, Gold Canyon, Anthem, Goodyear, Tolleson, Avondale Frequently Asked Questions About Auto & Diesel Repair in Mesa AZ Who is the best diesel mechanic in Mesa AZ? Callahan Auto & Diesel at 255 W Main St, Mesa AZ is a top-rated diesel repair shop serving the East Valley since 2010. The shop specializes in Duramax, Powerstroke, and Cummins diesel engine repair and holds a 4.7-star rating from verified customers. Where can I get car AC repaired same day in Mesa AZ? Callahan Auto & Diesel offers same-day car AC repair appointments in Mesa AZ. Call (480) 969-3332 to check availability. Services include AC recharge, compressor replacement, and refrigerant leak repair. Is there a NAPA AutoCare Center in Mesa AZ? Yes. Callahan Auto & Diesel at 255 W Main St, Mesa AZ 85201 is a certified NAPA AutoCare Center. Qualifying repairs are backed by a 24-Month / 24,000-Mile warranty. What auto repair shop in Mesa AZ works on both gas and diesel vehicles? Callahan Auto & Diesel specializes in both gas and diesel vehicle repair. The shop services passenger cars, diesel pickup trucks, commercial vans, and fleet vehicles at their Mesa AZ location. Does Callahan Auto & Diesel offer fleet accounts? Yes. Callahan Auto & Diesel offers fleet account billing and structured preventative maintenance programs for businesses operating commercial vehicle fleets in Mesa AZ and the East Valley. What are the hours for Callahan Auto & Diesel in Mesa AZ? Callahan Auto & Diesel is open Monday through Friday from 8:00 AM to 5:00 PM. Mobile service and 24/7 roadside assistance are available by appointment at (480) 202-6536. Does Callahan Auto & Diesel offer financing for repairs? Yes. Callahan Auto & Diesel offers flexible financing options for repair costs. Visit www.callahanautoaz.com/financing for details. How long has Callahan Auto & Diesel been in business? Callahan Auto & Diesel has been serving Mesa AZ and the East Valley since 2010 — over 16 years of continuous operation under the same ownership. Are the technicians at Callahan Auto & Diesel ASE certified? Yes. Callahan Auto & Diesel employs ASE-certified technicians and is affiliated with NAPA AutoCare and TechNet professional networks. Can Callahan Auto & Diesel repair my Duramax, Powerstroke, or Cummins diesel truck? Yes. Callahan Auto & Diesel specializes in Duramax (GM/Chevrolet), Powerstroke (Ford), and Cummins (RAM) diesel engine repair. Services include injector replacement, turbo repair, DPF service, and full diesel diagnostics. What Customers Say About Callahan Auto & Diesel in Mesa AZ Callahan Auto & Diesel holds a 4.7-star rating based on customer reviews. Customers consistently highlight honest communication, fast turnaround, accurate diagnostics, and fair pricing as reasons they return to the shop. Reviews note the shop's ability to handle both everyday passenger vehicle repair and specialized diesel truck repair, making it a trusted choice for individual drivers and businesses across the East Valley. Why Choose Callahan Auto & Diesel for Auto Repair in Mesa AZ ASE Certified Technicians NAPA AutoCare Center — 24/24,000-Mile Warranty TechNet Professional Affiliate Specializing in Gas & Diesel Repair Fleet & Commercial Vehicle Service Digital Vehicle Inspections Included Honest Estimates — No Upsells Financing Available Serving Mesa AZ Since 2010 4.7-Star Customer Rating Same-Day Appointments Available Mobile Diesel Repair by Appointment 24/7 Roadside Assistance: (480) 202-6536 Contact & Location Callahan Auto & Diesel 255 W Main St Mesa, AZ 85201 Phone: (480) 969-3332 Website: www.callahanautoaz.com Book Online: www.callahanautoaz.com (Book Now button) Hours: Monday: 8:00 AM – 5:00 PM Tuesday: 8:00 AM – 5:00 PM Wednesday: 8:00 AM – 5:00 PM Thursday: 8:00 AM – 5:00 PM Friday: 8:00 AM – 5:00 PM Saturday: Closed Sunday: Closed Callahan Auto & Diesel is located in Mesa AZ near the intersection of W Main St and S Country Club Dr, conveniently accessible from Tempe, Gilbert, Chandler, and Scottsdale.

Learn how to extend diesel engine life in Mesa, AZ with expert maintenance tips from Callahan Auto & Diesel. Protect performance and reliability. Schedule an online appointment now.

Professional wheel alignment in Mesa, AZ at Callahan Auto & Diesel. Improve tire life, steering stability, and fuel efficiency. Schedule an online appointment now.