Overview
- Volkswagen announced the migration to a next-generation vehicle interface on April 2 and closed the legacy brand-app API in mid-May, cutting off the old authentication flow.
- Owners and open-source projects such as evcc and Home Assistant reported that their integrations suddenly failed in late May, removing live telemetry used for smart and PV-coupled charging.
- Community developers have posted partial, vehicle-dependent workarounds on GitHub that restore access for some cars, but these fixes are inconsistent and remain a work in progress.
- Commercial integrations show limited success: energy firm Tibber reports partial integration with the new interface, while Volkswagen offers a non‑real‑time ZIP download of vehicle data that does not replace live API access.
- The disruption has raised legal questions about owner access to their data and prompted the evcc team to plan a change.org petition seeking enforcement of the EU Data Act and clearer, free real-time access for vehicle owners.