MechanicAI works with most popular ELM327-compatible Bluetooth Low Energy (BLE) OBD-II adapters. We recommend the OBDLink CX (~$50) for most users, but budget adapters from $15–$25 on Amazon also work. Note: Wi-Fi adapters and older non-BLE Bluetooth adapters are not supported.

All gasoline and diesel vehicles sold in the US and Canada from 1996 onwards are required to have an OBD-II port. Most hybrids and some EVs are also supported. If your car has the port, we can read it.

MechanicAI uses a two-layer system. Layer 1 instantly looks up your code from a built-in library of common trouble codes — this works offline. Layer 2 sends your code and vehicle profile to our AI engine, which returns a personalized analysis considering your specific car. The AI explains what's wrong in plain English, estimates repair costs, and suggests next steps.

Yes. Your scan history is stored on your device. When you request an AI diagnostic, your vehicle data is sent to our backend, which forwards it to Anthropic for analysis and returns the result; our backend is stateless and does not keep a server-side database of your scans or conversations. Your diagnostic data is not sold to third parties, and the app uses no third-party analytics or tracking. See our Privacy Policy for details.

For basic code lookup (Layer 1), no — it works completely offline. For AI diagnostics (Layer 2), chat, and live data features, you need an internet connection.

Estimates are based on national averages for your vehicle's make and model. Actual costs vary by location and shop. Use estimates as a starting point for conversations with your mechanic, not as a guarantee.

MechanicAI reads standard OBD-II diagnostic trouble codes. Some issues (unusual noises, intermittent problems, issues that don't set a code) require physical inspection. MechanicAI is a powerful starting point, not a replacement for a qualified mechanic.

Open the Settings app on your iPhone, tap your name, then Subscriptions, then MechanicAI Pro, then Cancel Subscription. You'll keep Pro features until the end of your current billing period.

When MechanicAI detects a safety-critical fault (brakes, airbags, steering, fuel system), it shows a 'Do not drive' warning. This means the vehicle may be unsafe. Have it towed to a qualified mechanic. These warnings are hardcoded and cannot be overridden.

We'd love to hear from you! Use the contact form below or email us directly at obdmechanic.ai@gmail.com.