On the outside the following:
Side indicators on pre facelift had a black plastic surround. On the facelift version, it did not.
On the front bumper side, the pre facelift was a single colour, single piece. On the facelift they fitted a seperate, loose centre air intake. (Under the numberplate, between the fogs.)
Also on the facelift, the kidneys got a fatter chrome surround.
Then a running change, not really part of the facelift, they introduced climate control AC around end 1995 beginning 1996.
Run out e36 316i cars received the full monty (excluding mags). These included clears all round, and the broad side trims. Also they had a nicer interior. (Door panels had leather inserts.