--- title: "Auto Repair Indianapolis IN | A-1 Auto Service | Master ASE Techs" description: "Serving Indianapolis since 1989. Master-level auto diagnostics, engine, brake, and electrical repair. Call (317) 841-1241 for transparent, reliable local service." lang: en json-ld: --- Serving Indianapolis since 1989 · Master ASE Certified Mon–Thu 7:30a–5:30p · Fri 7:30a–5:00p [![A-1 Auto Service — Indianapolis, IN](/__l5e/assets-v1/608ba33b-20ae-4354-9403-e21f6b8af764/a1-logo.png)](/) [Home](/)[Our History](/our-history) [Services](/services) [(317) 841-1241](tel:+13178411241) Est. 1989 · Master ASE Certified # Dealer-Level Diagnostics. Independent Local Trust. Since 1989, A-1 Auto Service has delivered driver-focused maintenance and advanced repair to the Indianapolis community — dealership-grade tools with the accountability of your neighborhood shop. [Call (317) 841-1241](tel:+13178411241)[Explore Our Services](/services) Visit The Shop 8170 Castleton Rd, Indianapolis, IN 46250 Shop Hours Mon–Thu 7:30a–5:30p · Fri 7:30a–5:00p Backed By Warranty Up to 3-yr / unlimited-mileage powertrain The A-1 Difference ## Not a dealership. Not a quick-lube chain. When facing a complex electrical malfunction, fluid leak, or major powertrain issue, drivers are often forced to choose between the high overhead of a dealership and the limited capabilities of a quick-lube. At A-1 Auto Service you receive master-level technical capabilities supported by nearly four decades of local trust. We answer directly to our Indianapolis customers — not a distant corporate board. 35+ Years Serving Indy ASE Master Certified 3-YR Powertrain Warranty OEM Diagnostic Access Our Services ## Full Service Capabilities Our Castleton Road facility handles complete vehicle maintenance, complex troubleshooting, and component replacement — click any service to learn more. [![Advanced Diagnostics & Electrical](/assets/service-diagnostics-DXo_wGn-.jpg) ### Advanced Diagnostics & Electrical ### Advanced Diagnostics & Electrical Dealership-level scanners, CAN bus troubleshooting, parasitic drain isolation, and wiring harness repair. Learn More ](/services/advanced-diagnostics-electrical)[![Engine & Transmission](/assets/service-engine-BCiHeq6D.jpg) ### Engine & Transmission ### Engine & Transmission Complete powertrain replacements from master rebuilders with up to 3-year, unlimited-mileage warranties. Learn More ](/services/engine-transmission)[![Heating & Air Conditioning](/assets/service-hvac-BSo_skHQ.jpg) ### Heating & Air Conditioning ### Heating & Air Conditioning Full climate control service on R-134a and modern R-1234yf systems with vacuum testing and UV leak detection. Learn More ](/services/heating-air-conditioning)[![Routine Maintenance](/assets/service-maintenance-J_WVNIae.jpg) ### Routine Maintenance ### Routine Maintenance Oil changes, fluid top-offs, and belt inspections — paired with a complimentary multi-point safety check. Learn More ](/services/routine-maintenance)[![Under Car Specialist](/assets/service-undercar-BOqb0A1t.jpg) ### Under Car Specialist ### Under Car Specialist Brakes, steering & suspension, exhaust and catalytic converter replacement, plus new tire mounting and balancing. Learn More ](/services/under-car-specialist)[![Inspections](/assets/service-inspections-BTilk21_.jpg) ### Inspections ### Inspections Objective pre-purchase used car evaluations and thorough pre-trip highway safety inspections. Learn More ](/services/inspections)[![Fleet Services](/assets/service-fleet-TZtdRqTn.jpg) ### Fleet Services ### Fleet Services Priority service and on-site component stocking for local delivery vans, service trucks, and tradesperson vehicles. Learn More ](/services/fleet-services) Customer Amenities ## A stress-free repair experience Comfortable Lounge Clean, comfortable customer waiting room. Free Wi-Fi Complimentary high-speed internet access. Key-Drop Box Secure after-hours vehicle drop-offs. Local Rides Transportation assistance arranged on request. ## Ready to book your next service? Give us a call — we'll walk through your vehicle, your options, and the price before any work begins. [Call (317) 841-1241](tel:+13178411241) ![A-1 Auto Service](/__l5e/assets-v1/608ba33b-20ae-4354-9403-e21f6b8af764/a1-logo.png) Dealer-level diagnostics with the accountability of a local independent shop. Serving Indianapolis drivers since 1989. #### Services - [Diagnostics & Electrical](/services/advanced-diagnostics-electrical) - [Engine & Transmission](/services/engine-transmission) - [Heating & A/C](/services/heating-air-conditioning) - [Routine Maintenance](/services/routine-maintenance) - [Brakes, Suspension & Tires](/services/under-car-specialist) - [Pre-Purchase & Pre-Trip](/services/inspections) - [Fleet Services](/services/fleet-services) #### Company - [Home](/) - [Our History](/our-history) - [All Services](/services) #### Contact - [(317) 841-1241](tel:+13178411241) - 8170 Castleton Rd, Indianapolis, IN 46250 - [service@a1autoserviceindy.com](mailto:service@a1autoserviceindy.com) - Mon–Thu 7:30a–5:30p Fri 7:30a–5:00p Closed weekends & major holidays © 2026 A-1 Auto Service. All rights reserved. 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