2004 Buick Century Standard 4dr Sedan (3.1L 6cyl 4A)
We bought the year model 2004 used because the previous year models had a gasket problem. This car has a wobbly feel to its wheels which I think is because of poor wheel bearings, not weak side walls of the tires. I have not bothered to pay for new replacements.
I recommend these three "upgrades":
1. Pour a can of transmission Seafoam in the automatic transmission by pouring it down the tube of the check stick.
2. Replace the air filter with a K&N or home made from cut reusable air conditioning filter material. MPG will improve 10%.
3. Replace the front door speakers with anything else, 5.25".
We hope this car will last a long while. It's a good choice for large people.