Faults:

At 50,000 miles the alternator went. I went to a local mechanic. It took 2 rebuilt ones. Finally he put in a AC Delco brand and now it works fine.

At 100,000 miles major electrical problems occurred. Took it to the dealer. They were unable to figure it out.

At 110,000 the water pump started to leak. Poured some additive in. That helped a lot.

The car is hard to work on. In order to change the plugs I had to buy a special tool.

Power windows and power locks don't work.

General Comments:

The car is mid-performance.

Acceptable free way entrance times.

The air is "Ice Cold".

Seats are comfortable, but the backs are wearing out.

Faults:

Replaced the battery at 82,000 miles.

Replaced the starter at 90,000 miles.

Replaced the brakes at 100,000 miles.

Replaced the battery at 123,000 miles.

General Comments:

This car is fantastic, I'm not really into a 4 door car, but I can't knock the performance of this bad boy.

I'm yet to bring it on the drag strip for a 1/4 mile ET, but as far as passing ability and all out acceleration, this car holds its own against any stock V6 out there.

Faults:

Alternator (s) replaced by me.

Water pump replaced by me.

Column Ignition Key unit dealer replaced.

Electronic Module dealer replaced.

Brake disks and pads by me.

Headlamp on/off switch I replaced.

Serpentine belt I replaced.

Radiator Fan I replaced.

Now needs a front or rear wheel bearing don't know which and I will replace.

One Spark plug wire I replaced.

Spark plugs 6 I replaced.

Rear power windows quit, wire broken in front door bundle, I will not bother to fix.

Put in new battery.

Tail pipe and muffler by muffler shop.

General Comments:

This is a running machine.

I never thought I'd like a GM car, but this one was my brother in law's dad's car. I was between jobs and my Acura Legend's transmission was beginning to slip so this red 90 Century was a right car at the right time.

What a strong running car. it has the 3 speed transmission without the overdrive. It feels light and is amazingly agile for Detroit iron.

The list of things broken and fixed seems long, but mostly routine things really.

I, but some Lube Gard in (do not work for them) the transmission along with fresh oil at about 60,000 miles and I think that maintenance helped it go so long.

It is a still going car and I just bought a 93 with the 3.3 and overdrive transmission. It has had great care and has 53,000 miles on it so now I have two Buicks. Will sell the 90 but somehow I like it better and may miss it.

Air works great and the radio is excellent for a factory unit. An amazingly good car and congratulations to the designers and builders of the 90 Buick 3.3.!!

Faults:

Nothing seriously wrong with car, considering its high mileage.

Replaced gas tank, radiator, oil pan the last year I owned it.

General Comments:

This was a very comfortable car, and great in the winter.

The car got a lot of use, daily.

Other than routine maintenance, and the normal things that need to be replaced after 12 years, I had no major complaints.

I never had a problem with the electric windows or electric locks. The air conditioner still worked after 12 years, with no maintenance on it.

If I hadn't found a great deal on a used-1999 Chevy Malibu, I'd probably still have the Century.