The car the mirrors are going onto (a 1995 S6 Avant) does have glass lenses. The car they came off of (2005 S4), doesn't.
However all 2000 and later North American market Audis have plastic lenses, just like everyone else. Mercifully some E-Code headlights continued to come with glass lenses post apocalypse, but they're becoming harder and harder to find.
That being said the two m.y. 2000 Audis in the family both have original headlights, have never been restored, and are showing minimal fading/discoloration. It's not like Audi was using some magic U.V. proof plastic because I've seen plenty of V.A.G. products from the same era with badly faded lights, ours have just had above average care.
What I miss my old Audi s4 -92 in that color! It was with 5 cylinder turbo and it was a dream to drive. The odd front breaks was a thing that didnt last in the longrun and they was UFO breaks. With the calipers clamps from under the rotor instead of from the top. That gave the rotor a much larger diameter than regular. There was a protection in form of a steel rim so the break pads would'nt fly of and damage the surroundings if they did. Look like you had a steel rim inside the alu rim lol
They will look great on your car those mirrors.
