Interactive Car Diagnostic

How the diagnostic wizard works

Select a symptom — the car does not start, the engine overheats, there is smoke, a noise, a vibration or a warning light — and the assistant walks you through a decision tree built like a real mechanic would think. Each answer narrows the possible causes.

• Causes ranked by probability
• Checks to run in the right diagnostic order
• Tools and parts you will need
• Estimated cost range

Always verify before replacing parts

A diagnostic tree gives hypotheses, not certainties. Always confirm each hypothesis with a physical check before buying parts. Many faults are cheap to fix and share symptoms with expensive failures.