Free AI Fault Diagnosis for Audi, VW, Škoda, SEAT & Cupra
Describe your symptoms, warning lights or fault codes and get an instant list of likely causes, built on our 30+ years fixing Volkswagen Group cars and vans. Free, and no obligation to book.
The tool gives guidance only. A confirmed diagnosis needs the car to be tested in the workshop.
How the VAG AI diagnosis tool works
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Tell us about the car
Enter your Audi, VW, Škoda, SEAT or Cupra model and year so the results are specific to your vehicle.
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Describe the problem
Add the symptoms, any dashboard warning lights and fault codes if you have them.
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Get likely causes
See the most likely faults and what to check next, with a report sent to your email.
What it can help with
- Engine management, EPC and glow plug warning lights
- DSG and S tronic gearbox hesitation, jerking or limp mode
- Haldex 4MOTION and quattro warnings
- Misfires, rough idle, loss of power and turbo issues
- DPF, EGR and AdBlue warnings on diesels
- OBD fault codes such as P-codes
When to bring it in
The AI tool narrows down the possibilities, but some faults need dealer-level equipment to confirm. Our VAG diagnostics service uses ODIS and VCDS to read every control module, check live data and pinpoint the cause, so you only pay for the repair you need.
VAG AI diagnosis FAQs
Is the Mechalex diagnosis tool free?
Yes. The online AI diagnosis is completely free for Audi, VW, Škoda, SEAT and Cupra owners, and there is no obligation to book.
How accurate is an AI car diagnosis?
It is a strong starting point. It uses the symptoms you describe and known faults for your model to suggest likely causes. It cannot test your car, so we always recommend a workshop diagnostic to confirm before parts are replaced.
Which cars is it for?
It is built for Volkswagen Group vehicles: Audi, Volkswagen, Škoda, SEAT, Cupra and VW vans such as the Transporter. Its suggestions draw on the faults we see every day on these models, from DSG and S tronic gearboxes to Haldex 4MOTION and quattro systems and diesel emissions.
What should I do with the results?
Use them to understand the likely problem and how urgent it is. When you are ready, book a diagnostic or repair and mention your results so our technicians can start in the right place.
Need the fault confirmed and fixed?
Mechalex is an independent VAG specialist in Aldermaston with over 30 years’ experience, serving Basingstoke, Tadley, Newbury and Reading. Book online or call 0118 380 1003.