Building in public

Your car talks.
Now you'll understand it.

WrenchAI plugs into your OBD2 port, diagnoses the real problem with AI, finds the cheapest parts, and walks you through the fix. One flow. No mechanic required.

🔌
Plug In
🧠
Diagnose
💰
Find Parts
✅
Fix It
The Problem

Check engine light on? That'll be $150 just to look at it.

Mechanics charge $100-150/hour for diagnostics. Existing OBD2 apps show you a code like P0301 and leave you guessing. Even the "smart" ones stop at diagnosis and never help you actually fix anything affordably.

12.8yr
Average vehicle age in the US
$150
Average diagnostic fee at a shop
60-80%
Savings from DIY repair
2M+
People using OBD2 apps today
How WrenchAI Works

Diagnosis to done, in three steps

01

AI Diagnosis

Reads live sensor data from your OBD2 port. Not just trouble codes. WrenchAI analyzes fuel trim, O2 levels, coolant temps, and hundreds of data points to find the actual root cause.

Goes beyond code reading
02

Cheapest Parts

Compares prices across RockAuto, AutoZone, O'Reilly, Amazon, and more. Matched to your exact year, make, and model. Shows you what a shop would charge vs. what you'll pay DIY.

Multi-retailer comparison
03

Repair Walkthrough

Step-by-step instructions written for your specific vehicle. Difficulty ratings tell you what you can handle at home vs. what needs a shop. No more guessing.

Vehicle-specific guides
Why WrenchAI

Other apps stop at the code.
We take you to the finish line.

Other OBD2 Apps

Show you P0301 and say "misfire detected"

You're left Googling what it means, which part to buy, which retailer is cheapest, and whether you can even do this yourself.

WrenchAI

Tells you it's likely the ignition coil on cylinder 1, shows you one for $34 on RockAuto, and walks you through swapping it in 25 minutes

From sensor data to wrench in hand. One continuous flow, no tab switching, no guesswork.

Repair Shops

Charge $150 to plug in the same scanner

Then quote $600+ for parts and labor on a job you could do in your driveway for under $50.

Your Savings

Every diagnosis shows the math

Shop would charge $X. Your parts cost $Y. You save $Z. That's not a feature, that's the whole point.

The Vision

Car repair knowledge shouldn't cost $150/hour

WrenchAI exists because knowing what's wrong with your car, finding the right part at the right price, and learning how to fix it should be accessible to everyone with a driveway and a wrench.