Maybe not govt mandated, but used by the governments. New cars have infotainment with GPS trackers, cameras etc. Toyota and Teslas were the worse from a year or two ago for selling your data to companies, especially insurance companies.
A week ago alstate data came out that they paid millions to many apps for your phone to track you like life360, gasbuddy and so on.
Don't get me started on TVs. Watch gamers nexus on LG TVs. They store 4gb of data including audio, screenshots - even if it's not connected to the internet. Doctor's offices, companies or other places that rely on hipa or trade secrets have these TVs sitting around.
Your wifi routers uses beam forming to track you around your house and can be accurate enough to make out complex shapes like faces.
Anyways, I came here to say I have the same generation a4 avant with the 3.2l, I think b7. Just the right loudness exhaust from factory when you floor it and at right rpms it reverberates like a super car because of the vvt.