NEW AD20 AD20 supports all OBD2 functions of ELM327 Bluetooth and AD10, with added engine diagnostics and extended features. AD20 Features: 1. HUD Function: AD20 supports HUD functionality, allowing you to change instrument panel styles online. 2. Driving Records & Analysis: AD20 records and analyzes driving data, including fuel consumption, distance, and driving behaviors. 3. Performance Test: AD20 enables vehicle performance testing, displaying key metrics through 100-meter acceleration tests. 4. Engine Diagnosis: Check engine light support and engine code reading/detection. 5. Error Code Analysis: AD20 reads and clears OBD2 error codes, analyzes them, and provides guidance on causes and solutions. 6. Free Update: Equipped with Bluetooth 5.0, compatible with Android and iOS. The AD20 software is independently developed and receives free updates. 7. High Quality: AD20 uses full-pin high-quality chips and durable housing, tested thoroughly before delivery. Hardware and software upgrades ensure reliable performance. AD20 Full Engine Diagnostic Tool