See what your car is saying.
Diag Drive turns any OBD-II adapter into a professional scanner — live engine data, fault codes explained in plain English, emissions readiness and deep all-module scans.
Dealer-level diagnostics on your own laptop
Works with any ELM327 / OBDLink adapter over USB, Bluetooth or WiFi. Petrol cars since 2001, diesel since 2004.
Live data & graphs
Real-time gauges for RPM, speed, coolant, boost, fuel trims and dozens more PIDs — with live graphs you can record and export.
Fault codes, explained
Read and clear trouble codes with plain-English common causes and fixes — not just a cryptic P-code and a number.
Emissions readiness
MOT-style readiness monitors plus Mode 06 on-board test results with pass/fail limits — know if it's ready before the test.
All-module scans
Go beyond the engine — scan ABS, airbag, transmission and body modules on Ford Transit and BMW, with failure meanings.
AI mechanic
Ask about any code, symptom or reading and get clear guidance tuned to your exact vehicle, powered by your Diag Drive account.
Your garage, synced
Add a car by number plate and it syncs with the Diag Drive phone app — one account, one subscription, every device.
One account on your desktop and phone
Diag Drive on your phone has the same AI mechanic and garage. Sign in with the same account and your cars, AI credits and Pro subscription come with you.
Opening the app the first time
The app is brand-new, so your computer will ask you to confirm it the first time. It's a 20-second, one-time step.
On Mac
- Open the .dmg and drag Diag Drive into Applications.
- Right-click the app and choose Open (don't double-click the first time).
- Click Open on the prompt. After that it opens normally.
On Windows
- Save DiagDrive-windows.exe somewhere handy — it's portable, no install needed.
- Double-click it. If SmartScreen appears, click More info → Run anyway.
- Diag Drive opens, and keeps itself up to date from then on.
Diag Drive keeps itself up to date automatically — you only download the installer once.
Requirements
Apple Silicon or Intel
64-bit
USB, Bluetooth or WiFi
Diesel from 2004