What's wrong with your car?
Explained like you're 5.
Enter your VIN to get your exact maintenance schedule, or describe a symptom to find the 2–3 most likely causes — with a driveway test and real fix costs, before you talk to any mechanic.
Decode your exact car
Enter your VIN (on your dashboard or door jamb) to get your specific maintenance schedule.
Know before you go
Get the 2–3 most likely causes ranked, with a simple driveway test you can do in 5 minutes.
Real fix costs
See the DIY part cost vs. what a shop will charge. Know if it's a $80 DIY or a $350 job.
Free OBD2 scan
AutoZone/O'Reilly/Advance scan your car for free. We decode the code in plain English.
Get a FREE OBD2 scan first — no purchase required
AutoZone, O'Reilly Auto Parts, and Advance Auto Parts all scan your car's computer for free. Walk in, they plug in a scanner, you get a code in under 2 minutes. Then come back here and look up that code at eli5cars.com/obd2 for the plain-English explanation.
Pro tip: Take a photo of the code before they clear it.
Common symptoms
In-depth guides
Brake Repair Guide: What It Costs and When You Need It
Everything about brake repair in plain English. How to tell when brakes are worn, what pads vs. rotors cost, realistic DIY vs. shop prices, and when to stop driving immediately.
Car Maintenance Made Simple
Everything you need to know about car maintenance in plain English. Oil changes, tire rotations, filters, brakes — when to do it, what it costs, and when to call a pro.
Check Engine Light On? Here's Exactly What to Do
Check engine light on? Don't panic. Learn what the light actually means, how to get a free code scan at AutoZone or O'Reilly, and which codes are urgent vs. can wait.