We put 108,000 miles on our 2000 Century. Besides oil/fluids, filters, tires, and brakes here is the long, long list of problems that we had with the car.

1. Power window lock out switch on driver's door broke. This somehow was broken by my wife with her purse. I do not fault Buick. Purchased a used switch assembly for $36

2. Fan switch - detents worn out. Replaced around 82,000 miles......bad Buick Replaced with a used switch for $12

That is the end of the list.
Total repair cost $48

The worst part of the car was the ride......too spongy. Other wise it was the best car that I ever owned. It always started, always ran. Hard to beat for dependable transportation.