How we check the data
The faults, service intervals and prices on these pages are collected from public sources and checked by the same rules for every engine, model and gearbox.
The two-source rule
A fault goes into the database only when at least two independent sources confirm it, or one strong source does: an official recall (KBA, EU Safety Gate, DVSA, NHTSA), a technical note from a vehicle or parts maker (e.g. Schaeffler REPXPERT, INA, ContiTech, Bosch, Hella), ADAC breakdown statistics or a TÜV / DEKRA inspection report. Forums alone are not enough.
Limited to the versions it affects
When a fault only hits some model years, engine codes, power outputs or only the hybrid, it is tied to those conditions, so owners of another engine do not see it. Recalls that apply only to the US or other markets are kept out of the European data.
Mileage and prices
The mileage range shows where reports cluster, not a limit. Prices are typical parts and labour at an independent workshop in Croatia and central Europe.
What is marked as checked
Engines and models marked "Checked against sources" have passed this review, with the date and the main sources on their page. The others have not yet and are marked so; treat them as general guidance.
Statistics
Roadworthiness-test statistics come from open data (UK DVSA MOT, Dutch RDW), plus owner complaints from the US NHTSA database, recalls from official databases and new-car data from the European Environment Agency (EEA, CC BY 4.0).
Corrections
If something looks wrong, report it in the app (the "Report an error" button next to each fault). Every report is checked by the same rules and the database is corrected.
Limits
The data is for information and does not replace the service book, the maker's instructions or an inspection by a mechanic.
Updated 29/10/2026