1991 Porsche 911 3.6L Petrol · H368 DMD

A 35 year old Porsche 911 carrying a sustained pattern of front steering wear, persistent engine oil leakage, and coil spring corrosion presents a roadworthiness profile that has drifted rather than deteriorated, though the cumulative advisory count is now substantial. Across seven recorded tests since 2020, the vehicle has passed five times and failed twice, with the most recent assessment on 30 January 2026 recording a pass accompanied by five advisories covering offside front track rod end ball joint play, offside front steering rack inner joint play, an engine oil leak described as not excessive, front inner tyre tread worn close to the legal limit, and nearside rear coil spring corrosion. The 2025 test produced a near identical advisory pattern, indicating that the offside front steering linkage, engine oil seepage, and nearside rear coil spring have been flagged on consecutive annual examinations and are therefore items which have not been rectified between tests. The November 2022 failure was a brake hose bulging under pressure on the offside front, alongside a brake performance test that could not be completed due to the defective hose, which is a meaningful safety item rather than a trivial lighting or visibility defect. The October 2021 failure was more procedural in nature, comprising inoperative registration plate lamps, ineffective wiper blades on both sides, and a split offside front inner CV joint boot allowing dirt ingress, none of which have reappeared in subsequent records, suggesting those items were addressed at the time. The recorded mileage of 132,985 miles across roughly 35 years equates to an annual accumulation of approximately 3,800 miles, which is markedly low for the vehicle's age and well below typical mileage for a car of this vintage. The MOT history itself only covers the period from late 2020 onwards, with a notable gap of over two years between the February 2024 test and the January 2025 test, although the more significant observation is the lack of recorded testing prior to October 2020, meaning the true history of this car from new through to that date is not visible in the data provided. The relatively modest annual mileage does not necessarily indicate light mechanical wear, as standing periods combined with infrequent use can produce their own specific degradation patterns including dried suspension seals, oxidised brake components, perished rubber boots, and corrosion on ferrous parts such as the already flagged coil spring. The visible test intervals suggest the vehicle has been used consistently enough to remain in testable condition but not heavily enough to generate high wear rates on consumables, and the absence of any mileage anomalies or sudden jumps between tests indicates that the recorded odometer figure is internally consistent across the documented period. For a prospective buyer, the steering and front suspension components flagged across consecutive tests warrant particular physical inspection, as the offside front track rod end ball joint play, offside front steering rack inner joint play, and nearside rear coil spring corrosion have been identified by the tester but not resolved. On a test drive, listen for clonking or knocking from the front end when traversing speed bumps or uneven tarmac, which would indicate the track rod end has worn beyond its service tolerance, and feel for any vagueness, tremor, or reluctance to self-centre through the steering wheel that would point toward the rack inner joint. Inspect the nearside rear wheel arch and spring visually, looking for surface rust, pitting, or any loss of coil material thickness, as a corroded coil spring can fracture under load. The engine oil leak should be assessed for severity by examining the underside of the engine and surrounding components for fresh wet residue or accumulation of oil residue, and the condition of the brake hoses, particularly the offside front which previously bulged, should be checked for surface cracking, swelling, or softness when the system is pressurised. The front inner tyres should be measured for remaining tread depth and inspected for uneven shoulder wear suggesting a geometry issue consistent with worn steering linkage, and any split or perished CV joint boot on the offside front inner drive shaft, previously recorded as split, should be confirmed as having been properly replaced with a new boot and fresh grease rather than a temporary repair.