At 3A Automotive & Diesel Repair, we offer comprehensive auto repair and maintenance services for all makes and models in Phoenix, AZ. From routine oil changes to complex engine repairs, our ASE-certified technicians handle it all — backed by a 3-year/36,000-mile warranty and honest, transparent service since 1975. Whether you drive a gas-powered car, a diesel truck, or a fleet vehicle, we're your one-stop shop.
Regular oil changes and scheduled maintenance are the foundation of a reliable vehicle. We perform lube, oil & filter services, 30/60/90K tune-ups, fluid checks, and all factory-recommended maintenance.
Learn More →Worn brakes are a safety issue — don't wait. Our technicians inspect and replace brake pads, rotors, calipers, and perform brake flushes for all makes and models.
Learn More →From check engine lights and minor repairs to major engine overhauls and replacements, our ASE-certified mechanics diagnose and fix engine problems accurately the first time.
Learn More →We service automatic and manual transmissions, clutches, four-wheel drive systems, and perform transmission flushes — keeping your drivetrain smooth and reliable.
Learn More →Phoenix heat demands a reliable A/C system. We recharge refrigerant, fix leaks, replace compressors, and service heating systems — so you stay comfortable year-round.
Learn More →Modern vehicles depend on complex electronics. We diagnose and repair electrical faults, computer issues, check engine lights, starters, alternators, and batteries.
Learn More →From power steering repair to shocks, struts, alignments, and chassis work — we keep your vehicle handling safely on Phoenix roads and beyond.
Learn More →Specialized diesel repair for Cummins, Duramax, Powerstroke, Sprinter, and all light to medium-duty diesel vehicles. Our diesel-certified technicians know these engines inside and out.
Learn More →We service axles, differentials, CV joints, driveshafts, and four-wheel drive systems — essential for Phoenix drivers who use their trucks hard.
Learn More →We offer 24-hour discounted towing service to get you and your vehicle safely to our shop whenever you need it.
Learn More →We provide full fleet maintenance and repair services for commercial vehicles, helping Phoenix businesses minimize downtime and keep their vehicles road-ready.
Professionally trained on all makes and models.
The best warranty in Phoenix, with nationwide coverage.
Over 46 years serving the Phoenix community.
We pick you up and drop you off.
Honest assessments, never unnecessary upsells.
Recognized for ethics and customer service.
Serving Phoenix, Scottsdale, Tempe, Glendale, Chandler & Mesa
When it comes to auto repairs and maintenance we provide the best possible service by having Certified Technicians, top quality parts, and a staff dedicated to make sure that you fully understand the repairs and services your car needs.
Our Signature
Oil Change Service
Our 65-point
vehicle inspection
Choosing 3A Automotive & Diesel means choosing transparency. We believe a well-informed customer makes the best decisions, so we always take the time to explain which services are immediate priorities and which can wait. Every brand we service is backed by our industry-leading 3-year/36,000-mile warranty, giving you dealership-quality results with the personal touch of a family-owned shop.
No matter what brand of vehicle you drive, the experts at 3A Automotive & Diesel are ready to help you stay on the road. Call us today at (602) 888-0588 or schedule your appointment online to experience Phoenix's most trusted multi-brand repair facility.
