2002 Infiniti Q45 III Dimensions, Size & Specs

The curb weight of the Infiniti Q45 III is approximately 1820 kg (4012 lbs). This substantial weight contributes to a planted, stable feel on the road, enhancing ride comfort and providing a sense of solidity typical of luxury sedans. However, it also means the vehicle requires a powerful engine and well-tuned suspension to maintain engaging driving dynamics.

The Infiniti Q45 III offers a luggage capacity of 355 liters (12.5 cubic feet). This trunk space is reasonably generous for a luxury sedan of its size, accommodating luggage for a weekend trip or daily grocery runs comfortably. While it may not match larger SUVs, it provides practical cargo space without sacrificing passenger comfort.

The Infiniti Q45 III is equipped with 225/55 R17 tires. These tires strike a balance between comfort, handling, and road grip. The 17-inch wheels allow for a smooth ride, while the 225 mm width and 55% aspect ratio provide stability and traction essential for a luxury sedan focusing on ride quality and confident handling.

A standard residential garage typically measures about 2.4 meters (8 feet) in width and 6 meters (20 feet) in length. With its dimensions of 5070 mm (5.07 meters) length and 1840 mm (1.84 meters) width, the Infiniti Q45 III should fit comfortably inside most standard garages. Drivers should, however, account for additional space on either side for door opening and movement.

At 1840 mm (72.4 inches) wide and 1500 mm (59.1 inches) tall, the Infiniti Q45 III stands within typical full-size luxury sedan dimensions. Its width provides ample shoulder room for passengers, and the height balances aerodynamics with headroom. Compared to rivals like the Lexus LS or BMW 7 Series of the era, the Q45 is competitively sized, offering a spacious yet manageable profile.

The Infiniti Q45 III (2001-2006) is somewhat larger than the Q45 II (1997-2000). The Q45 III extends to 5070 mm (199.6 inches) in length, compared to its predecessor's approximately 4970 mm (195.8 inches), showcasing a more elongated design. The width and height remain relatively similar, but the newer generation offers a more modern and aerodynamic styling. This size increase improves interior space and trunk capacity, enhancing overall comfort and practicality.

Dimensionally, the Infiniti Q45 III is comparable to contemporaries like the Lexus LS 430 and the Acura RL. With a length of 5070 mm (199.6 inches), width of 1840 mm (72.4 inches), and height of 1500 mm (59.1 inches), the Q45 III positions itself comfortably within the full-size luxury sedan segment. While it is slightly longer than some competitors, it offers similar width and height, balancing presence with practical maneuverability.

The Infiniti Q45 III is recognized for its bold and aerodynamic exterior design, featuring a smooth, flowing silhouette with a prominent grille and rounded edges, diverging from the boxier previous generation. Inside, it offers a luxurious and tech-forward cabin with leather upholstery, wood trim, and advanced features for its time. This combination of elegant design and modern amenities established the Q45 III as a serious contender in the luxury sedan market.

Thanks to its spacious dimensions—5070 mm length, 1840 mm width, and 1500 mm height—the Infiniti Q45 III provides ample interior room for passengers, enhancing comfort during long trips. Its sizeable luggage capacity and smooth ride quality further make it well-suited for daily commuting and long-distance travel. The car’s luxury features, combined with a balanced size that fits most garages and city streets, offer a practical yet upscale driving experience.