1986 Mercedes-Benz 500 5.0L Petrol · D978 NOH

The 1986 Mercedes-Benz 500 presents as roadworthy with a stable maintenance trend. The most recent test on 28 May 2025 at 153,691 miles returned a pass with no defects recorded, and the three prior passes from 2021 through 2024 also carried no advisories. The single failure on 21 July 2021 at 153,203 miles listed no defects, indicating an administrative or presentation issue at the testing station rather than a mechanical fault, with the same-day retest passing cleanly. Recorded mileage sits at 153,691 against an age of roughly 40 years, equating to about 3,842 miles per year. The odometer moved only 488 miles between the July 2021 pass and the January 2024 pass, and just 116 miles across the 2024 to 2025 tests. Such low annual use over four decades suggests long periods of storage. A gap exists between the July 2022 and January 2024 tests of roughly 18 months, breaking the annual cycle, though the car still passed when presented. With no advisories or defects logged across any test, the DVSA record itself reveals no recurring wear on suspension bushes, brake discs, exhaust emissions, or structural corrosion. A buyer should still commission a physical inspection beneath the car. Forty-year-old Mercedes bodies and subframes are prone to hidden rust at chassis mounting points and floor pans even when MOT testers note nothing. The low standing mileage means perishable items such as brake hoses, fuel lines, and coolant hoses may have degraded through age rather than use. Check for seized calipers from disuse, flat-spotted tyres, and perished rubber. The clean MOT history implies the previous keeper kept the car lightly exercised and presented it honestly, but paper evidence cannot substitute for a ramp-based survey of structural integrity and brake function.