I recently had an Android-powered system installed in my 2015 GLI, be advised though that such systems usually don't offer DVD support as well, so you media options are limited to USB, Bluetooth and streaming over Wi-Fi.
I have been pretty happy with the overall system, it has a 1.4GHz quadcore processor with 1GB RAM, 6GB onboard storage with Android 4.4.4 KitKat. Apps work just fine and I routinely use YouTube and SoundCloud to stream songs even when I'm driving, made possible by Zong's stellar 4G network.
If you're in Karachi I can guide you to the place where you can get one for your car as well. The system cost me 32,000 plus installation, I also bought a back camera separately for 2,000.
Hope this helps.