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Audi A4 Bluetooth, AUX, CarPlay and Android Auto Upgrades

Hardware multimedia upgrades for compatible Audi A4 vehicles equipped with MMI 2G or MMI 3G. Available options include Bluetooth music streaming, AUX input and wireless Apple CarPlay and Android Auto integration.

These products work alongside the original Audi infotainment system. Compatibility depends primarily on the installed MMI generation, connectors and vehicle configuration rather than the navigation map region.

Identify your MMI system before ordering

MMI 2G, MMI 3G Basic, MMI 3G High and MMI 3G Plus require different hardware. Check the complete system version and the connections available in the vehicle. If you are unsure, follow our Audi MMI identification guide or use the Check Upgrade service.

Multimedia upgrades available for the Audi A4

This category contains physical interfaces for adding modern audio sources or smartphone integration without replacing the original Audi MMI system.

Bluetooth and AUX for MMI 3G

A hardware interface for compatible Audi A4 vehicles with MMI 3G Basic or MMI 3G High. It adds Bluetooth music streaming and an AUX audio input while retaining control through the original MMI system.

The module connects to the MOST fibre-optic network and requires a power connection. It operates as an additional CD changer, so the existing changer may need to be disconnected.

View the Audi MMI 3G Bluetooth and AUX module

Wireless CarPlay and Android Auto

A multimedia interface for compatible Audi A4 vehicles with MMI 3G Basic, MMI 3G High or MMI 3G Plus. It adds wireless and wired Apple CarPlay and Android Auto while retaining the original display and MMI controls.

The interface also supports screen mirroring, USB multimedia playback and connections for compatible aftermarket front and rear cameras.

View the Audi MMI 3G CarPlay and Android Auto interface

Bluetooth and AUX for MMI 2G

A hardware music interface for compatible Audi A4 vehicles equipped with MMI 2G Basic or MMI 2G High. It provides Bluetooth audio streaming and an additional AUX source through the original infotainment system.

Installation requires connection to the vehicle’s MOST fibre-optic network and power supply.

View the Audi MMI 2G Bluetooth and AUX interface

Which Audi A4 multimedia upgrade should you choose?

Installed system Available upgrade Main features
MMI 2G Basic or MMI 2G High MMI 2G Bluetooth and AUX interface Bluetooth music and AUX input
MMI 3G Basic or MMI 3G High MMI 3G Bluetooth and AUX module Bluetooth music, AUX input and original MMI controls
MMI 3G Basic, High or Plus CarPlay and Android Auto interface CarPlay, Android Auto, screen mirroring, USB media and camera inputs

These are hardware products

The products in this category are physical modules that must be installed in the vehicle. They are not firmware files, activation scripts or navigation map updates.

Installation instructions

Frequently asked questions

Does the vehicle’s navigation region determine compatibility?

Usually not. Compatibility is determined mainly by the installed MMI generation, available connections and vehicle configuration. The complete system version should still be checked before ordering.

Does the CarPlay interface replace the original MMI?

No. It works alongside the original Audi MMI and uses the factory display and controls.

Can an MMI 2G Bluetooth module be installed in an MMI 3G vehicle?

No. MMI 2G and MMI 3G require different compatible interfaces. Identify the installed system before selecting a product.

Are installation instructions available?

Yes. Use the appropriate installation guide linked above and follow the instructions supplied with the selected product.