I believe Volvo used it from about 1974. They had the electronic
D-jetronic up to 1973. SAAB used D-jetronic  up to 1974 and K-jetronic
from 1975.

Audi also used K-Jetronic, and later KE-Jetronic, which had electronic
lambda control for the cat converter. I don't know what years they
used it, but my 1984 200 turbo quattro had K-Jetronic, and the 1987
and 1990 turbos had KE-Jetronic. My guess is that any straight 5
cylinder audi/vw engine used K or KE.

Posrche 928 also used it AFAIK, if you're looking for a system for a
V8.

wikipedia has some info, but in German only it seems:

http://de.wikipedia.org/wiki/K-Jetronic

the page for D-jetronic contains referemces to car models, but
unfortunately not the K page. K-Jetronic is likely to have superseded
D though.

http://de.wikipedia.org/wiki/D-Jetronic