Mercury's large rear-wheel-drive sedan sports a mild facelift for 2006. Grand Marquis is basically a retrimmed Ford Crown Victoria and among the last traditional body-on-frame cars. Models are GS, GS Convenience, LS Premium and top-line LS Ultimate. All come with a 224-hp 4.6-liter V8, 4-speed automatic transmission, and ABS. LS models offer an optional Handling Package with dual exhausts and 239 hp. Traction control is standard except on the base GS, where it's not available. Optional front side airbags are exclusive to LS models, but no curtain side airbags are offered. All versions include a front bench seat, and all but the base GS come with power-adjustable pedals. Styling changes involve a new grille, front fascia, and headlights, plus sundry trim revisions. Grand Marquis' performance and accommodations mirror those of similarly equipped Crown Victorias.