Audi Quattro
Swiped from Google's cache of a now-defunct website:
The Coupe Quattro Turbo, later known as 'UrQuattro', for 'original
quattro', was introduced in 1980 as a twin of the Coupe, except for
the wider fenders. Externally, development of this car was kept on a
par with the other models, but the unique bumpers remained until the
end. In 1982, the UrQuattro gained a digital dash. From 1989 to 1991,
the UrQuattro had a 220 hp 20v engine instead of the previous 200 hp
10v. In the US, the UrQ was sold from 1982 to 1985 with a 160 hp 10v
engine and the early-type quad-headlight grill. Only the 1985 US
models had the rounded grill but still the quad headlights.
Here in canada, I remember the Coupe (Or Audi GT) being sold until
1991. The Quattro was never actually sold here, so what we find
are mostly 1985 and older imports from the states.
Visually, Quattros differ from GTs by way of having fender flares
over the wheels. They should also say "quattro" on the hatch
liftgate, although some owners removed all identifying marks from
the external shell except the Audi rings.
The holy grail is a 1989-1991 UrQuattro with the turbo 20V engine and
a good solid frame. These will be exceptionally rare over here
because they would have been imported by the owners, and those that
have been imported would probably have rusted rather badly (Audi was
not very good at rustproofing the factory-imported cars, and European
cars were not rustproofed as well as North American cars).