The 2003 Mercury Grand Marquis is a full-size, rear-wheel-drive luxury sedan known for its spacious interior, comfortable ride, and robust body-on-frame construction. Powered by a 4.6L SOHC V8 engine producing 224 horsepower and 270 lb-ft of torque, it offers a smooth and quiet driving experience, particularly on highways. This model, built on Ford's reliable Panther platform, was designed with traditional American automotive values in mind, appealing to those who prioritize comfort and space. Key features include plush seating, ample cargo capacity, and a focus on a compliant suspension system, making it a dependable choice for everyday use and longer journeys.

This owner's manual provides essential information for operating, maintaining, and understanding your 2003 Mercury Grand Marquis. It covers critical areas such as driver and passenger safety, instrument and control explanations, feature operation including climate control and audio systems, and important driving and break-in procedures. Furthermore, the manual details routine maintenance, fluid checking, vehicle storage, and guidance for unexpected situations like flat tires or dead batteries. It also includes technical specifications, warranty information, and an index, serving as a comprehensive resource for ensuring the longevity and optimal performance of your vehicle.