Just bought 2 Tiguans!

[phantomcamel]

Is there a long one then?
The 20cm cable I got with the car is useless if you want to dash mount the iPhone, so you can use the TomTom as well.

Nope... but I think there is some stuff floating around on eBAY which is compatible.
I usually just stream via Bluetooth on the way to work & don't bother with the cable unless I forgot to change the iPhone or I am going for a serious long distance drive