Diagnose Your Car, Save Money
That warning light doesn't have to mean a $150 diagnostic fee. Describe the symptom and get the likely cause, the urgency, and what it should cost. Free to start.
Stop paying $150 just to be told what's wrong with your car.
GreaseGenius is an AI mechanic in your pocket. Describe what your car is doing in plain English and get a straight answer: the most likely cause, how serious it is, whether it's a DIY job, the parts involved, and a rough cost range. No appointment. No diagnostic fee. No upsell.
Built for everyday drivers, not gearheads.
ASK THE AI MECHANIC
Type it like you'd say it: "shakes when I brake," "ticking at cold start," "AC blows warm." You get the most likely cause, how urgent it is, and an honest DIY-or-shop call - tailored to your exact year, make, model and engine.
SYMPTOM CHECKER - WORKS OFFLINE
Don't feel like typing it all out? Walk through a guided diagnosis and narrow it down fast. The knowledge base is built into the app, so it works with no signal at all - parking garage, roadside, dead zone.
CHECK ENGINE CODE LOOKUP
Staring at a code like P0420? Look it up and see what it actually means in plain English - the usual causes and what the repair typically runs.
STEP-BY-STEP REPAIR GUIDES
Oil changes, brake pads, tire rotation and more - with the tools, torque specs and safety steps to do the job right the first time and keep the labor money.
BUILT AROUND YOUR CAR
Enter your VIN or pick your year, make, model and engine once. From then on, every answer, part and guide is matched to what you actually drive.
24+ LANGUAGES
Use the whole app in the language you actually think in.
WHY DRIVERS USE GREASEGENIUS
- Know before you go: walk into any shop already knowing the problem.
- Catch overcharges and "repairs" you don't actually need.
- Do the easy jobs yourself and pocket the labor.
- Understand your car instead of guessing.
FREE TO START - NO ACCOUNT, NO CARD
- 5 AI questions a day, free
- No sign-up, no email, no credit card
- Symptom checker, code lookup and repair guides, free to use
GREASEGENIUS PRO
Go Pro when you want more:
- Much higher daily AI limits
- Priority responses
- No ads
$7.99/month or $99.99/year.
AN HONEST WORD
GreaseGenius is a smart diagnostic assistant, not a replacement for a hands-on professional inspection. A trouble code points at the most likely cause - often that part, not always - and the same repair can cost more on one car than another. So you get the odds, the range, and the right questions to ask. Brakes, steering and overheating are life-safety items: have a professional inspect them before you drive on it.
GreaseGenius doesn't replace your mechanic. It replaces walking in blind.
Your car. Your money. Your call.
Questions or feedback? Visit https://greasegenius.ai
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