2004 MINI 1.6L Petrol · DF53 UWN

A persistent oil seepage from the engine, accompanied by a minor power steering weep and the first signs of underbody corrosion, defines the mechanical story of this 2004 MINI across its recorded MOT history. The vehicle most recently passed on 6 June 2026 with no defects recorded, continuing a generally compliant roadworthiness trend. However, the intermediate tests reveal a recurring advisory for an oil leak not deemed excessive, first noted in October 2022 alongside a slight seepage from the power steering pipe or hose and general surface corrosion beneath the vehicle. The same oil leak advisory was repeated in February 2024 and again in April 2025, confirming that while the seepage has never crossed the threshold for failure, it has not resolved itself either. There is also a prior failure in October 2021 for both headlamp aim readings being too low, a repairable but notably recurring concern on older MINIs as the adjustment mechanism wears. The combination of these items suggests a vehicle that remains road-legal but is beginning to exhibit the classic early signs of age-related fluid weeping and surface oxidation on a 22-year-old platform. With 94,592 miles accumulated over 22 years, this MINI has averaged roughly 4,300 miles per year, which is markedly below the typical annual mileage for a car of this age. The MOT record shows testing concentrated in the 2019 to 2022 window with two tests on the same day in October 2021 (a fail immediately followed by a pass), and then a gap until the 2024 test before annual testing resumed. Low annual mileage reduces wear on major drivetrain components but increases the likelihood of dried seals, perished rubber, and the oil and power steering seepage now being flagged, as prolonged standing periods allow gaskets and flexible hoses to harden. The underbody surface corrosion noted in 2022 is consistent with a car that has covered relatively few miles but has still spent over two decades exposed to road salts and moisture, meaning the structural integrity of the subframe, suspension mounting points, and brake line runs warrants particular scrutiny even though no structural advisories have yet been raised. For a prospective buyer, the immediate priority is to determine the precise source of the recurring engine oil leak. On MINIs of this era, common origins include the valve cover gasket, the oil filter housing gasket, and the timing chain cover lower section, so a thorough under-bonnet inspection with the engine warm is essential. Check the power steering pipes, particularly the high-pressure line running along the front subframe, for fresh seepage or dampness, and ask whether the 2022 advisory has been rectified. The underbody corrosion flagged in 2022 was described as general surface corrosion, so a ramp inspection is advisable to assess whether this has progressed into anything more substantive, with close attention paid to the front subframe, suspension arm mounting points, and the brake pipe runs along the chassis rails where trapped salt can initiate pitting. On a test drive, listen for any timing chain rattle on cold start, as MINI chain guides and tensioners are known wear items at this age and mileage, and any unusual engine top-end noise would warrant further investigation. Feel for any clonks or knocking through the front suspension over speed bumps and uneven road surfaces, which would indicate worn lower arm bushes or drop links, and pay attention to steering response for any vagueness or fluid loss that could point to the previously flagged power steering seepage worsening. Check that the headlamp aim adjustment still holds correctly, as the 2021 failure for both lamps being too low could recur if the adjuster mechanism is worn. Finally, verify the operation of all cooling system components, as a 22-year-old low-mileage example is likely to be due for replacement of the coolant, thermostat, and potentially the water pump, even though none of these items have yet appeared on the MOT record.