Bluetooth and iPhone/iPod/AUX Kits for Audi A4 S4 2006-2008

GTA Car Kit for Audi A4 S4 2006, 2007 and 2008 is all you need to integrate your smartphone, tablet or mp3 player with your stock car stereo system.

We offer iPod/iPhone/iPad/AUX Wired kit with Bluetooth Extension port and Pure Bluetooth with AUX. Please refer to the table below to find detailed comparison between these two products.

Please note:

As GTA Car Kit is using the same port as the satellite radio, it is not possible to have them both of them active. Therefore GTA Car Kit installation will deactivate your satellite radio.

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Installation video for Audi A4 S4 2006-2008

Disclaimer: install at your own risk
GTA Car Kits is not responsible and should not be liable for any damages caused to you or your vehicle during installation of the kit. All installation videos on this website and GTA Car Kit's YouTube channel provided as a reference only. If you don't feel comfortable with DIY installation - please contact a car audio professional in your local area.

Product Comparison: iPod/iPhone/iPad/AUX Wired VS Pure Bluetooth

Feature	iPod/iPhone/iPad/AUX Wired	Pure Bluetooth with AUX
Audio Streaming	Audio Streaming Through Apple 30-pin connector or AUX 3.5mm cables. If you have newer Apple device - use 30pin to lightning adapter Optional Bluetooth Extension (sold separately) allows to stream audio wirelessly.	Audio Streaming Wirelessly through Bluetooth or through AUX 3.5mm cable
Track Switching	Track Switching From car stereo controls or steering wheel (iPod/iPhone/iPad only). Note: wireless streaming through Bluetooth Extension does not support switching tracks via car stereo controls.	Track Switching From car stereo controls and/or steering wheel for Bluetooth paired devices including iPhone and Android phones.
Sound Quality	Sound Quality CD quality or better	Sound Quality CD quality or better
Hands-free calling	Hands-free calling No	Hands-free calling Yes. Volume is automatically lowered. Integrated external microphone.
Universal Power / Ground harness	Universal Power / Ground harness Yes	Universal Power / Ground harness Yes
Included in the package	Included in the package - Main integration box - Universal power/ground harness - Radio removal keys (not required) - AUX 3.5mm cable (1m) - 30-pin Apple cable (1m) - Grounding loop isolator for iPod/iPhone/iPad - Installation Guide - 4 VW/Audi stereo removal keys	Included in the package - Main integration box - Universal power/ground harness - Radio removal keys (not required) - AUX 3.5mm cable (1m) - External microphone (2.5m) - Installation Guide - 4 VW/Audi stereo removal keys

Customer Reviews

4 reviews for Bluetooth and iPhone/iPod/AUX Kits for Audi A4 S4 2006-2008

Randy – December 10, 2013

“Hi , The model of the Audi is a 2007 S4 it has the flip down screen radio from the factory ..I love the radio but It was missing the most important feature the iPod jack.

I tried the adaptor where you have to tune your radio to a certain channel , noway it was terrible don’t waste your money ,your adaptor saved me big bucks I got a quote for 1,000 dollars from the big electronic chain store they said I would have to change my radio if I want the iPod to work again I want to thank you …”
Moody – September 1, 2016

Couldnt be happier with this purchase. Bought it for my 2007 A4 and installed it in 5 minutes. Bluetooth works perfect and sound quality is good. saved me money and most importantly, saved me from having to get one of those horrendous aftermarket radios. keeping the stylish stock audi radio and getting bluetooth functionality is a dream come true.
Alexander – March 14, 2018

Eventhough I didn’t purchase product from a company directly stuff were helpful and knowledgeable about their product and my issue was resolved. Maurizio thank you again for your help and support.
Rated 5 out of 5

T – April 6, 2026

Dead simple install (aside from pulling the head unit out, mine was rather stubborn but that’s no fault of this product), everything worked perfectly without issue. Audio quality is as good as you’d expect out of aux / bluetooth (much better than the bluetooth FM transmitter I was using previously.) Support is responsive as well! Definitely a worthwhile upgrade.