The 2004 Infiniti FX35 is a midsize luxury crossover SUV (often described as a “sports crossover”) that blends SUV ride height with a car-like driving feel. As the first model year of the first-generation Infiniti FX (S50), it entered the market as a style-forward, performance-oriented alternative to more traditional luxury SUVs. It’s ideal for drivers who want sharp handling, strong V6 power, and premium features in a distinctive package, but who can live with tighter rear-seat and cargo space than boxier rivals. The FX35’s sporty character made it a standout in the early-2000s luxury crossover segment.

- 3.5L V6 performance: The FX35 uses Nissan/Infiniti’s 3.5-liter VQ35DE V6, widely known for smooth power delivery and strong midrange acceleration for its era. - 5-speed automatic transmission: Paired with a 5-speed automatic, the FX35 is tuned for responsive driving and highway cruising. - Rear-wheel drive or AWD capability: Many 2004 FX35 models were offered with rear-wheel drive, while AWD versions are commonly found in snow-belt regions for improved traction. - Sporty chassis and steering: Firm suspension tuning and quick steering response give it a more athletic feel than many contemporaries, which is a major reason buyers seek this model out today. - Upscale cabin and tech for its time: Available leather, premium audio, and convenience features helped position the FX35 as a true luxury offering rather than a dressed-up mainstream SUV.

Shoppers researching 2004 Infiniti FX35 reliability should know the platform can be dependable with good maintenance, but age-related wear is now the main factor. Here are common 2004 Infiniti FX35 problems and issues owners frequently report: - Oil consumption and valve cover leaks: Some VQ35DE engines can use oil as mileage climbs (often noticeable around 100,000+ miles), and valve cover gasket seepage can develop, leading to oil smell or drips. Staying on top of oil level checks is important. - Cooling system and overheating risks: Radiator and hose aging is common on a 2004 vehicle. A neglected cooling system can contribute to overheating, and some owners report failures such as radiator leaks or weak cooling performance as mileage increases (often 120,000+ miles depending on climate and upkeep). - Suspension wear and clunks: The FX’s sporty tuning can accelerate wear on components like control arm bushings, ball joints, sway bar links, and shocks/struts. Symptoms include clunking over bumps, wandering steering, or uneven tire wear—often showing up in the 80,000–140,000-mile range. - Interior and electrical annoyances: Power window regulators, door lock actuators, and dash/interior trim wear can appear with age. These aren’t typically catastrophic, but they’re common issues that affect daily usability.