The 1999 Buick Century is offered as a four-door Sedan Custom or a four-door Sedan Limited. Both feature a 3.1-liter V6 engine, a 4-speed automatic transmission and antilock 4-wheel disc brakes. Optional equipment on the Custom includes front side airbags. Both the Custom and the Limited come nicely equipped with plenty of safety features, including airbag protection and child safety rear door locks.