2009 Infiniti FX 3.7L Petrol · J200 ESA

Structural corrosion to the rear lower subframe and recent suspension failure define the current mechanical state of this vehicle. While the record shows a period of clean passes between 2023 and 2025, the most recent testing cycle in April 2026 indicates a decline in condition, requiring the replacement of a leaking nearside front upper shock absorber and the repair of a rear fog lamp before achieving a pass on 18 April 2026. The persistence of the subframe corrosion advisory suggests an ongoing issue with the vehicle's underside integrity. An accumulation of 121,575 miles over seventeen years represents a typical usage pattern of approximately 7,151 miles per year. This level of use suggests a consistent operational history without prolonged periods of inactivity, though it means that high-wear items such as suspension bushings, engine mounts, and drivetrain components have been subjected to standard long-term degradation. There are no significant gaps in the testing history, indicating the vehicle has remained in active use. Particular attention must be paid to the central rear lower subframe, which remains flagged for corrosion. A physical inspection of the underside is necessary to determine the extent of the oxidation and whether further preventative treatment or structural repair will be required in the near future. During a test drive, the buyer should listen for any unusual knocks or clunks from the rear of the chassis when traversing uneven surfaces, which could indicate that the corrosion is affecting the stability of the mounting points. The recent failure and subsequent repair of the nearside front upper shock absorber should be verified. The buyer should feel for any excessive bouncing or instability during braking and cornering, as a recently replaced component should provide firm control. Additionally, given the previous advisory regarding uneven tyre wear on the offside rear, the current tyre condition and alignment should be checked to ensure there are no lingering suspension geometry issues causing premature tread wear.