Lab-grade answers for what your car is hiding.
Describe the symptom. RevAI cross-checks real NHTSA recalls, owner complaints and service bulletins — then tells you how confident it really is.
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- 01 — GroundedEvery diagnosis is checked against real recall and complaint data, never vibes.
- 02 — HonestA confidence score you can trust — it says “not sure” when it isn’t.
- 03 — Safety-firstBrake, steering or fuel issue? Flagged in red before anything else.
How it works
- 1Describe the problem
Tell RevAI what’s wrong — a sound, a warning light, a trouble code, even a photo of the issue.
- 2We cross-check real data
Your symptom is weighed against NHTSA recalls, owner complaints, and known patterns for your exact year, make and model.
- 3Get a clear answer
The most likely cause with an honest confidence score, a repair-cost range, what to check, and where to buy the part.
RevAI vs. the alternatives
Guessing online
- Generic forum answers
- Not your exact vehicle
- No confidence, no cost
- Free
RevAI
- Grounded in real recall & complaint data
- Your exact year, make & model
- Honest confidence + repair-cost range
- Answer in 30 seconds — free to start
The shop
- Hands-on inspection
- $80–200 just to diagnose
- A day or two of waiting
- Upsell pressure
Common questions
Is it free?
Yes — you get 3 full diagnoses every month free, plus unlimited use of the VIN decoder, recall checker, and OBD-code lookup. Paid plans add more monthly diagnoses.
How accurate is it?
Every diagnosis is cross-checked against real NHTSA recall and owner-complaint data for your exact vehicle and comes with an honest confidence score. It is AI-assisted guidance, not a replacement for a licensed mechanic on safety-critical issues.
Do I need an OBD scanner?
No. Describe the symptom in plain English — a sound, a warning light, a trouble code, even a photo. If you do have a code, enter it for an even sharper answer.
What do I get?
The most likely cause, what to check, an estimated repair-cost range, repair videos, and links to buy the exact part — plus follow-up questions in the same chat. See plans →