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Yes, Flux is currently free. You can ask questions about your car without paying anything. Guests get 10 messages per day; signed-in users on the free plan get 20 messages per day.
No. Just describe your problem in plain language, or paste diagnostic codes or mechanic quotes. No OBD scanner, VIN lookup, or special tools required.
No. Flux provides unbiased information to help you make your own decisions. We don’t sell parts, push specific shops, or have paid placement in our results.
That’s exactly who Flux is built for. Everything is explained in plain language without assuming technical knowledge.
Flux helps you understand symptoms and diagnostic codes, but we always recommend a professional inspection for safety-critical issues. Remote diagnosis has limits — Flux helps you understand the situation and make informed decisions.
Flux works with most passenger cars and light trucks, including electric vehicles. It’s most helpful for consumer vehicles from the last 20–30 years.
Yes, the Flux chat interface is fully responsive and works on phones and tablets. Just visit tryflux.app in your mobile browser.
Flux draws on broad automotive knowledge and is designed to give practical, helpful guidance. However, it can make mistakes. Always consult a certified technician for major repairs and safety decisions.
Have a question not answered here? Email us at hi@tryflux.app
Last modified on August 14, 2026