2004 Nissan 350 Z 3.5L Petrol · OV54 OVR

Recurring exhaust system degradation and progressive corrosion of underbody components define the mechanical history of this vehicle. While the record shows a consistent pass trend, including the most recent test on 6 November 2025, there is a chronic pattern of exhaust seepage and leaks that have persisted since 2019. The nature of these advisories has evolved from minor seepage at the flexi sections to a leak at the y-section and corroding catalytic converter heat shields that are now breaking off. A total recorded mileage of 54,503 miles over twenty-two years represents a low annual average of approximately 2,477 miles. This usage profile suggests the vehicle has spent significant periods of time stationary or has been used sparingly. Mechanically, such low usage often shifts the primary risk from drivetrain wear to the degradation of rubber components and the acceleration of surface corrosion, as evidenced by the repeated mentions of rusty coil springs in the testing history. Inspection should focus heavily on the exhaust system and suspension integrity. The recurring advisories regarding the flexi sections and the y-section indicate a system with persistent leaks. During a test drive, listen for an increased exhaust rasp or a distinct blowing sound, particularly under acceleration, which would confirm the presence of the recorded leaks. The corrosion noted on the catalytic converter heat shields should be visually verified to ensure they are not rattling or interfering with other underbody components. Attention must also be paid to the chassis and suspension. The recorded play in the offside front anti-roll bar link and the widespread corrosion of the coil springs require a physical check for structural integrity. Listen for knocking or clunking sounds when traversing uneven surfaces or during low-speed steering manoeuvres, as these are typical symptoms of worn suspension linkages. A thorough visual inspection of all four coil springs is necessary to determine if the recorded rust is superficial or if it has compromised the metal.