I was interested when I read your post so I did a little searching (researching).
Here's what I found (just in case others want to know):
- "Eurostile" was used for the gauge faces.
- "Serpentine Sans ICG Bold" / "Serpentine Sans" is really close to the badge font.
- "Eurotechnic" is also sort of close.
http://www.xnology.com/ (There's a Corrado font here, and lots of neat stuff)
http://www.corrado-club.ca/media/vwfonts.exe (Expands with Stuffit on a Mac, has a few VAG fonts)
http://www.vw-page.at/pics/downloads/fonts.zip (A few more, including a Porsche font)
http://www.webpagepublicity.com/free...AG%20Round.ttf (VAG Round)
http://www.webpagepublicity.com/free...unded%20BT.ttf (VAG Round Bold Type)