At 110,000 miles, let's just say I've had a lot of problems.
I've suffered the infamous trunk hatch problem. In order to open the trunk, someone has to open it while the button is pressed inside or use the key. After numerous visits to the dealer, it still hasn't been fixed properly.
My check engine light is always on.. the code it always reads according to my mechanic "low voltage". Has had three new batteries and wiring replaced and a new alternator. I have come to accept it now.
Lights flicker under hard acceleration, no fix for that.
Sunroof broke around 108000 miles (I never used it until recently); dealer wants $1425 to fix, even though it's a common problem.
The tape double sided adhesive that the spoiler sits on started coming off after 10,000 miles. Dealer blamed it on something hitting the spoiler, causing it to lose "grip", even though there was no sign of damage to the spoiler. Took it to 2 different body shops and all agreed... "the glue gave up". Fixed it myself.
The car suffers from a weird electrical short, where all the gauges except the speedometer revert to their inactive state, so the fuel gauge reads empty, temp reads cold, tach reads zero, and the trip computer always reads 0 miles to empty, even when the tank is full.
Gas light comes on when the tank is full.
Was suckered into buying the extended warranty with the "touch of class" paint job. Got a rock chip in the front bumper at 45,8 -- the paint on the bumper had peeled almost completely off. The car has "flexi-paint"; it's supposed to flex and give way without cracking or peeling.
Bumper was repainted under warranty, but after the warranty expired, I was on my own. Bought a bra to cover the front. No more peeling.
I have a faulty mirror control; it was replaced.
The passenger's window is slow to go up and down when controlled from the driver's side. Have gone through 4 sets of tires already, due to uneven tire wear on the driver's side.
The driver's mat holder (pre-tensioner) broke off after 70,000 miles. Now the mat will not stay in place.
Cup holder by the driver doesn't hold drinks well around freeway on ramps or curves. Drinks always come flying into the driver's lap (mine!). Only use the rear cup holder now.
Seats are nearly impossible to keep clean, as well as the floor. Some stains are there to stay.
A/C system has had two separate holes in it. Fixed both times, and each time the A/C works worse than before; have given up on fixing it.
There are other things that went wrong with the Cougar, but why only talk about the bad.