2002 Mercury Grand Marquis The Mercury Grand Marquis is one of the last surviving rear-wheel-drive, V8-powered full-size cars built on a separate frame. Its ostensible competitors, Buick LeSabre, Chrysler Concorde, Pontiac Bonneville and Toyota Avalon, are all more modern in concept, with front-wheel drive, V6 engines, shorter wheelbases and unitbody construction. ..read more..watch videos...