For Volkswagen, the ID.4 was supposed to be the "game changer" in China—the model that proved the German legacy giant could tangle with domestic heavyweights like BYD and Tesla. While the hardware has been widely praised for its driving dynamics and build quality, the software experience has historically been the car's Achilles' heel.
Unlike global ID.4s which rely on an ICAS1 (central compute) + ICAS3 (infotainment) setup, the Chinese 2025+ update introduced a : vw id 4 china software update