I just bought a 1995 XLS from my dad who bought it new and it still runs like a dream. After we replaced the transmission it got right back up to the original speed and power. That is the only part that we have replaced in it.
The automatic AC heat control, it helps to keep you on the road and not all over the place.
NEW SUSPENSION it is sooooo rocky and I'm replacing it with a performance suspension but I love it and its a quick lil car even after 10 years.