The product "Audi A2DP Interface Audi with AMI Bluetooth Streaming Interface" from Connects2 with the product ID CTAAD1A2DP is designed for Audi models with AMI input. However, it is not clear whether it is specifically compatible with an Audi A3 8P model year 2012 and RNS-E. Compatibility depends on whether the vehicle has a functional AMI connection. It would be advisable to check the connections in the vehicle to ensure that they match the adapter.