1986 Nissan 300 ZX 3.0L Petrol · D500 NGG

The vehicle is currently roadworthy but the maintenance history reveals a concerning trend of progressive structural degradation. While it passed its latest test in August 2025 at 125,820 miles, it failed that same session due to excessive carbon monoxide emissions and rear underbody corrosion. The persistence of underbody rust across the 2020 and 2025 tests indicates that structural integrity in the lower chassis is an ongoing issue that has not been fully remediated. The mileage profile is exceptionally low for a forty-year-old vehicle, averaging approximately 3,146 miles per year. Data shows the car has remained largely static for years, with only 109 miles covered between 2022 and 2025 and 132 miles between 2020 and 2022. This low usage suggests the vehicle sits for long periods, which often leads to the degradation of rubber components, seized seals, and perished fuel lines, alongside accelerated corrosion due to moisture retention, as noted in the record. A buyer must prioritise a thorough physical inspection of the chassis and suspension mounting points. The 2020 test explicitly flagged significant corrosion on the front floors, chassis members, and fuel pipes, while the 2017 failure detailed excessive corrosion on the rear suspension mountings and inner sills. These are critical structural areas where deep-seated rot could compromise the vehicle's safety. The recent 2025 emissions failure also suggests the engine management or fuel system requires attention, which is common in vehicles that undergo long periods of inactivity.