Diago AI

Why is your car…?

Tell Diago the symptom — get the likely cause, what to check next, and a ballpark shop cost.

First one's on us. No card needed.

Diagnose your vehicle problem

Add your vehicle details and describe the issue. Cars, trucks, RVs, motorcycles, boats, farm equipment, small engines, and more.

✓ One's on us — your free diagnosis is ready

Symptom-based guidance from your description — not a replacement for a scan tool or hands-on inspection.

Vehicle details

VIN optional — fills year, make & model

Decoded via NHTSA (free). We don’t save your VIN unless you opt in below.

Take or upload a photo of the whole vehicle for a ballpark year/make/model — use VIN above for exact specs.

Year

Make

Model

Mileage optional

Engine type optional

ZIP code or city (for local stores & mechanics)

Email optional — get your report emailed to you

The problem

Symptom category optional

Description

Fault codes optional

If you have codes from a scan tool, enter them here (e.g. P0300, P0420)

Hey — try us out. This one's on me.