Android Auto can be very sensitive to the quality of its wired connection. Google advises that the first step in troubleshooting problems is to verify your USB cable is functioning correctly, as it is the critical link for data transfer, especially in cars that only support a wired connection.
Cables can wear out, but other factors like length are also crucial. Longer cables can degrade signal quality, and shorter ones help keep your car tidy. Avoid using extensions or USB hubs, as they add connection points that can lead to random disconnections, particularly when driving over bumps.
The issue stems from the cable's dual role: it must handle all data for navigation, music, and calls, not just charge your phone. An inadequate cable results in lag, audio issues, and dropouts. However, not all problems are cable-related; sometimes the car's infotainment system or USB ports are at fault.
For the best results, Google recommends using the cable that came with your phone. If buying a new one, ensure it is certified by the USB Implementers Forum, ideally within the last two years. While USB 2.0 works, USB 3.2 Gen 1 or higher offers better performance. Remember, some USB-C cables only charge and don't transmit data, so a short, certified cable from a reputable brand is your best bet.