As mid-size sedans go, this is a big car. Redesigned for 2002, the Altima grew a significant 7.1 inches in wheelbase. Its track widened 1.8 inches in front and 2.4 inches in the rear. Overall it measured 5.7 inches longer, 1.3 inches wider, and 2.0 inches taller. A long, 110.2-inch wheelbase leaves plenty of room for large doors, which make the Altima look somewhat larger than it is. Even the base Altima comes with 16-inch wheels, which help its looks and its handling.

The Altima's large-diameter wheels are pushed out near the four corners, which enhances its aggressive look, as well as helping it handle better. The front grille and bumper stick out quite far but are nicely set off by multi-parabola projector-beam type headlights, with four bulbs set behind large triangular covers. Although the grill opening is fairly large by modern standards it doesn't look awkward. The whole front of the car looks like one cohesive unit.

The rear of the car is even more striking, featuring a sloping roofline more reminiscent of a coupe than a four-door sedan. It ends in a high trunk that is set off by bold round taillights, turn signals and backup lights all set behind a triangular-shaped clear cover. The units are surrounded in bright silver, the current trend among young hot-rodders. The trunk has a large opening and generous volume. Its gooseneck hinges intrude into the useable space, but have the advantage of popping open the trunk lid when a button on the key fob is pressed. Design details abound on the Altima that are not present on the all-new Accord and other mid-size sedans. Creases in the mirrors, fog lamps integrated into the front bumpers and other details give the Altima distinction. The Altima is assembled with a one-piece bodyside structure, for more consistent panel fit, and Nissan claims panel-fit accuracy within 1.0 mm.