Camshaft synchronizer had to be replaced around 100,000.
Coolant reservoir cracked and had to be replaced.
Belt tensioner and idler pulley had to be replaced.
Replaced both front wheel bearings due to this irritating squeal they had developed.
Bought a new wheel because I hit the biggest pot hole ever - bent the factory steel rim causing some unwanted turbulence (not the car's fault...).
All four door panels have started to come apart (the vinyl fabric inserts have started to peel away from the panel due to the summer heat).
Really nothing out of the ordinary - all of these problems are common with this car; with the exception of routine maintenance, this car is rather low maintenance and all of these problems I have managed to fix myself.
This is an excellent car. I have enjoyed owning it for the past 6 years and putting over 50,000 miles on it. It is unfortunately underpowered with the 3.0L SOHC V6, but what the car lacks in power it more than makes up for in reliability.
I have never had any serious problems with this car. I've only had to deal with the common problems associated with all Ford Taurus' that I have listed above.
Despite the lack of power (155 HP), this car is a lot of fun to drive and the interior is very well organized and comfortable - I could live in this car, and I practically do with all the driving I do.
I was slightly disheartened that the LX package lacked keyless remote entry, cruise control, and a decent radio (it came with an AM/FM radio only!). But I've remedied that problem by purchasing a stock CD player from a salvage yard and adding the Mach stereo system that came standard on higher end Tauri (including tweeters in the sail panels).
Overall, I love this car and highly recommend it to others.