The Oldsmobile Alero was a compact car produced by the Oldsmobile division of General Motors from 1998 to 2004. The Oldsmobile Alero was introduced in spring 1998 as a 1999 model to replace the Achieva and Cutlass. The Alero was sold either as a 4-door sedan or as a 2-door coupé. All Aleros came in base GX, mid-level GL, or high-end GLS trim; GL trim was split into three levels: 1, 2, and 3. The final Alero Final 500 Edition (#500 of 500), a GLS 4-door, also happened to be the final Oldsmobile ever built, and was signed under its hood by the employees of the General Motors Lansing plant. Most recent models of the Oldsmobile Alero include keyless entry remote systems as a standard feature.