Powered by master-tech AI reasoning

Diagnose your car like an ASE-certified tech

AutoDiag AI interviews you the way a great mechanic would — one smart follow-up at a time — then delivers ranked probable causes, severity, repair steps, and real cost estimates.

No mechanic gaslightingMileage-aware reasoningSeverity & safety advice

How It Works

From symptom to diagnosis in four guided steps.

1

Enter Vehicle Information

Year, Make, Model, and Mileage.

2

Describe The Problem

Explain the symptoms you're experiencing.

3

Answer Follow-Up Questions

The AI asks vehicle-specific diagnostic questions.

4

Receive Your Diagnostic Report

Likely causes, severity, repair estimates, parts, and recommendations.

See How AutoDiag AI Works

A real-world walkthrough of one diagnostic session.

Vehicle
2018 Nissan Titan 5.6L V8
Problem
Rattling noise when turning.
AI Follow-Up Questions
  • Does the noise occur while moving or stopped?
  • Does it happen during left turns, right turns, or both?
  • Do you feel vibration in the steering wheel?
Diagnostic Report
CV Axle Joint72%
Wheel Bearing18%
Sway Bar Link10%
Severity
Medium
Est. Repair
$200 – $650

Why Choose AutoDiag AI?

Not a generic chatbot — a structured diagnostic engine built for vehicles.

Vehicle-Specific Diagnostics

Reasoning tuned to your exact year, make, model, and engine.

Mileage-Based Analysis

Wear patterns and failure rates weighted by your odometer.

OBD-II Code Support

Paste DTCs and get interpretation in the context of your symptoms.

Photo Analysis

Upload pictures of leaks, parts, or damage for visual review.

Dynamic Follow-Up Questions

The AI narrows the diagnosis the way a real tech would.

Repair Cost Estimates

DIY, independent shop, and dealer pricing ranges.

Severity Ratings

Critical / High / Medium / Low with drive recommendation.

PDF Diagnostic Reports

Download a clean report to share with your mechanic.

Supported Vehicle Brands

All major makes — domestic, European, and Asian.

Ford
Chevrolet
Toyota
Honda
Nissan
Ram
Jeep
Subaru
Hyundai
Kia
BMW
Mercedes-Benz
Tesla
Audi
Volkswagen
Lexus

Frequently Asked Questions

Disclaimer. AutoDiag AI provides diagnostic assistance based on the symptoms you describe, vehicle information, your responses to follow-up questions, OBD-II codes, and uploaded images. Results are estimates intended as informational guidance. A professional hands-on inspection may still be necessary for certain repairs and any safety-critical issue. Always consult a qualified mechanic before performing work that affects braking, steering, suspension, fuel, or electrical safety systems.

Ready to figure out what's wrong?

Enter your vehicle, describe the symptom, and let AutoDiag AI work the problem.

Start Diagnosis