Four-wheel disc brakes are standard for 2004 on Buick's lowest-priced car. Century shares its basic platform with Buick's Regal, which targets a younger audience. A 175-hp V6 with an automatic transmission is the sole powertrain. ABS is optional, but 4-wheel disc brakes replace a front-disc/rear-drum setup. The ABS option includes traction control and a tire-pressure monitor. A front bench seat for 6-passenger capacity is standard. A side airbag for the driver is available with the optional Limited package. OnStar assistance is optional.