Buick launched a redesigned version of its midlevel sedan during the 1997 model year, to replace the slightly smaller Regals that had debuted back in '88. Though sharing its underskin structure and basic interior with the Century, Regal was marketed as a sportier sedan, with more-powerful engines. Structurally, the Regal also is related to the Oldsmobile Intrigue and Pontiac Grand Prix. Both the base LS and more-costly GS got a 3.8-liter V6 engine and automatic transmission. Under GS hoods, however, the V6 was supercharged, producing 240 horsepower, in contrast to the usual 195. The Regal GS also got a firmer suspension, a body-colored grille, and leather upholstery. Both models were equipped with front bucket seats and a console-mounted floor shifter. Standard fittings included separate climate controls for the driver and front passenger, magnetic variable-assist power steering, and antilock 4-wheel disc brakes.