The 1998 Infiniti Q45 represents the pinnacle of the original rear-wheel-drive luxury sedan era, a model defined by its silky-smooth V8 engine and assertive, coachbuilt styling. Introduced as a direct challenger to the likes of the Lexus LS and BMW 7-Series, this generation of the Q45 was engineered to deliver a serene, high-speed cruising experience wrapped in Italian-inspired design. For the model year 1998, Nissan's luxury division refined its grand tourer with subtle updates that enhanced both performance and sophistication, cementing its status as a compelling choice in the used luxury market.
Design and Exterior Evolution
The 1998 Infiniti Q45 arrives as the final year of the first-generation platform, a fact evident in its flowing lines and classic proportions. The exterior design is a masterclass in aggressive elegance, featuring a low, wide stance accented by chrome detailing on the grille, window moldings, and side sills. The signature four-headlamp front fascia, a distinguishing feature since the model's introduction, gives the sedan an unmistakable presence on the road, while the integrated trunk spoiler speaks to its high-performance credentials.
Interior Craftsmanship and Comfort
Step inside the 1998 Q45, and the focus shifts from brute force to refined tranquility. The cabin is a sanctuary of luxury, draped in rich, three-color leather upholstery that contrasts beautifully with the dark, polished wood grain on the dashboard and center console. Every surface feels tactile and well-considered, from the weighted shift lever to the bolstered sport seats that provide exceptional lateral support during spirited driving without sacrificing long-distance comfort.
Mechanical Mastery: The VK45DE Engine
The heart of the 1998 Q45 is its legendary 4.5-liter V8 engine, the VK45DE, a technological marvel of its time. This naturally aspirated powerplant produces a robust 280 horsepower and 300 lb-ft of torque, mated to a smooth 4-speed automatic transmission. What sets this engine apart is its advanced valve timing system, which optimizes performance across the rev range, delivering linear power delivery and a soundtrack that is both authoritative and melodious, eschewing the harshness common in performance sedans of the era.
Smooth, linear power delivery for effortless highway merging.
Refined idle and operation, enhancing the serene cabin atmosphere.
Robust construction contributing to the vehicle's long-term reliability.
Technology and Features
For the 1998 model year, the Q45 was equipped with a suite of advanced technologies that underscored its position as a forward-thinking luxury car. This includes a GPS navigation system, a rarity at the time, which integrated seamlessly into the center console. Other highlights featured dual-zone climate control, allowing front passengers to set their preferred temperatures, and a premium Bose audio system that transformed the cabin into a mobile concert hall, ensuring every journey was accompanied by exceptional sound quality.
Driving Dynamics and Handling
Despite its considerable size and weight, the 1998 Infiniti Q45 handles with a precision that belies its grand tourer status. The rear-wheel-drive layout, combined with a sophisticated multi-link rear suspension and an advanced electronically controlled suspension (ECS) system, provides a balance of comfort and responsiveness. The ECS, in particular, is a standout feature, automatically adjusting damping rates to absorb road imperfections for a smooth ride while firming up during aggressive cornering to minimize body roll, thus delivering a composed and planted feel at any speed.
