2004 Pontiac Grand Prix (_IX_) Dimensions, Size & Specs

The curb weight of the 2004 Pontiac Grand Prix (IX) ranges from 1610 to 1680 kg (3549 to 3704 lbs), depending on the trim and equipment level. This weight is fairly typical within the mid-size sedan segment of its era, balancing structural rigidity and safety features with performance requirements. The weight supports stable handling while ensuring the engine and suspension systems can deliver smooth acceleration and braking performance. Compared to lighter compact sedans, it is heavier, which can provide a feeling of solidity and comfort but may slightly reduce fuel efficiency relative to lighter competitors.

The trunk space in the 2004 Pontiac Grand Prix (generation IX) offers a practical 454 liters (approximately 16 cubic feet) of luggage capacity with the rear seats up, ample for everyday needs like groceries or luggage for a small family trip. When the rear seats are folded down, the available cargo volume expands significantly to 1614 liters (about 57 cubic feet), allowing for much larger items such as sports equipment, large boxes, or extended travel luggage. This flexibility makes the Grand Prix (IX) suitable for both daily commutes and occasional long-distance travel with heavy packing needs.

Yes, the 2004 Pontiac Grand Prix (IX) will comfortably fit into a standard single-car garage. Standard residential garage dimensions typically range around 2440 mm (8 feet) in width and 4880 mm (16 feet) in length or larger, while the Grand Prix measures 1819 mm (71.6 inches, roughly 6 feet) wide and 5037 mm (198.3 inches, about 16.5 feet) long. Although its length is just slightly over 16 feet, most garages accommodate it with minimal clearance required at the front or back. The car’s width ensures ample space to open doors and move around it inside the garage.

With a width of 1819 mm (71.6 inches), the Pontiac Grand Prix (IX) offers substantial interior shoulder and hip room, contributing to a comfortable cabin experience for both front and rear passengers. This width is slightly above average for mid-size sedans of its time, enhancing the feeling of spaciousness without making the vehicle cumbersome in narrow lanes or parking lots. A broader stance also improves stability during cornering and high-speed maneuvers, boosting confidence in handling—especially important for a sedan marketed with sporty performance traits.

Compared to its predecessor, the 2004 Pontiac Grand Prix (IX) saw incremental dimensional changes that enhanced overall size and interior space. The IX generation is longer, measuring 5037 mm versus earlier models, reflecting advances in safety, comfort, and design trends favoring larger cars. While width and height changes were more modest, the slightly stretched length allowed improved legroom and trunk capacity. These dimension tweaks yielded a more comfortable and practical vehicle while retaining the performance heritage of its predecessors.

When compared with similar mid-size sedans of the early 2000s like the Chevrolet Malibu, Ford Taurus, and Toyota Camry, the 2004 Pontiac Grand Prix (IX) holds its own with a slightly longer length and comparable width. Its cargo capacity of 454 liters (16 cubic feet) is competitive but slightly smaller than some rivals that emphasize trunk space. However, its rear seat folding capability expanding to 1614 liters (57 cubic feet) is a strong advantage, making it more versatile for carrying larger items. Styling and sportier suspension tuning also differentiate it, appealing to buyers seeking a balance of size, comfort, and sporty driving experience.

The 2004 Pontiac Grand Prix (IX) comes equipped with tires sized at 225/60 R16, 225/55 R17, and 225/45 R18, paired with rims ranging from 5J x 16 to 5J x 18 depending on the trim and options. Larger rims with lower-profile tires generally enhance handling by reducing sidewall flex during cornering, offering a sportier driving experience. However, they can result in a firmer ride due to less tire cushioning. Smaller rims with higher-profile tires improve ride comfort by absorbing bumps better. Buyers can select according to their preference for comfort or sportiness within this generation.

Standing at a height of 1420 mm (55.9 inches), the Pontiac Grand Prix (IX) maintains a low and sleek silhouette that aids aerodynamic efficiency, contributing to better fuel economy and reduced wind noise at speed. The relatively low height combined with its substantial length allows for a dynamic, sporty stance which enhances driver engagement. Regarding visibility, the sedan design strikes a good balance, providing decent forward and side sightlines without the bulkiness of taller SUVs, though rear visibility relies on interior mirrors and backup assistance technologies for safer reversing and parking.

Given its generous external dimensions — particularly the width of 1819 mm (71.6 inches) — the Pontiac Grand Prix (IX) 2004 offers a comfortable interior space for both front and rear passengers. The roomy cabin allows good shoulder room and adequate legroom for taller occupants. The low height contributes to a sportier seating position without feeling cramped, while the layout of controls and visibility fosters a pleasant driving experience. Overall, the interior space balances passenger comfort with a performance-oriented design, making it suitable for daily commuting and longer journeys.