Does Audi RS6 has Bluetooth?

No, Audi RS6 isn't available in AUX.

Here are the Rpm at Max Hp and variants of Audi RS6:

Here are the Rpm at Max torque and variants of Audi RS6:

Here are the Aspiration Form and variants of Audi RS6:

Here are the torque (Nm) and variants of Audi RS6:

Here are the Horsepower (PS) and variants of Audi RS6:

No, Audi RS6 doesn't have Collision Warning.

No, Audi RS6 doesn't have Immobilizer.

Here are the Assembly and variants of Audi RS6:

No, Audi RS6 doesn't have Head-up Display.