I’ll start with the Porsche 997, the 996 looked alright imo, but it looks “like a 90s Porsche”, the 997 made it look sleeker and more modern. Still looks good today.
As for cars that looked worse after a facelift? Maybe the facelifted 6th gen Camaro? The 6th gen looked great pre-facelift, but they did something weird with the headlights and now it looks so-so…
16-18 Maxima:
Not a bad looking car
19-23
MUCH better. I’m a sucker for full LED lighting so seeing them go from LED low beams and incandescent tail lights to LED Low and High beams along with LED Taillights and Turn signals made me like them even more.
93-95 Grand Cherokee:
Iconic, ground breaking, truly awesome.
96-98
This to me was the superior one especially with the interior. I never like the early airbag equipped steering wheels on Most Chrysler products including the Grand Cherokee so when they changed to a 3 spoke design I was sold on Grand Cherokees from there onwards.
As far as cars that looked bad post face lift I can’t really think of any at the moment