All wheel drive.

[steiner_ca at hotmail.com (Craig Steiner)]

In 1986, Car & Driver Reported:

"What will tell the tale, though, is the hardware, and the first course has 
just been served: the VW Quantum Syncro wagon. "Syncro" is VW's name for 
4wd, and most of its car lines will get the treatment. The badge has already 
shown up on the venerable Vanagon (C/D, February). The Golf will benefit 
from Syncro-ization in about a year, and an all-new 4wd Scirocco will appear 
soon thereafter."

I had asked this question about 2 years ago.  Someone mentioned that they 
saw a V6 version.  Rick Alexander sent me the following info:

You are right that is a Buick Grand National V6 and it puts it to the ground
through Audi Quattro gear. The Rutan boys are members of my auto cross club
http://www.cartct.com . There is Dan Rutan with the #81 lime green V6 AWD
'84 Scirocco, his father Bill Rutan with the gray #80 '80 16v AWD also
Quattro, cousins Will #99 and Chip Rutan #9 run a Baja Bug. Those boys are
FAST. I'll be seeing the '80 Scirocco and The Bug today at our last event of
the season. The '84 with the V6 only comes out for special occasions like
our Tri-States two weekends ago. Awesome to watch, and what a sound that
makes.