Midsize, front-drive 6-passenger sedan arrived in late spring 1989 as GM's challenge to the Ford Taurus. A coupe joined the sedan that fall on the same 107.5-inch wheelbase, roughly replacing the old Monte Carlo. Chevrolet's sedan was the first 4-door from the GM design that produced the 1988 Buick Regal, Oldsmobile Cutlass Supreme, and Pontiac Grand Prix coupes. Luminas came in base or sportier Euro guise. Euros wore blackout body trim and had a sport suspension, and either 15- or 16-inch tires. Base Luminas made do with 14-inch rubber. Standard equipment on all models included 4-wheel disc brakes, power steering, and a fully independent suspension all around. Euros added air conditioning.