When selecting a DAB (Digital Audio Broadcasting) car radio, you must prioritize DAB+ compatibility, as it is the current standard in most regions (Europe, Australia, etc.) and offers better audio quality and efficiency than the original DAB. Ensure the unit features a high-sensitivity tuner to maintain signal stability at high speeds. Additionally, check for Bluetooth 5.0+ integration for seamless hands-free calling and music streaming, and verify if the display uses IPS technology for better visibility under direct sunlight.