2015 Infiniti QX70 3.0L Diesel · RO15 CBF

This 2015 INFINITI QX70 presents a generally solid mechanical record, though a recurring oil leak demands attention. The most recent MOT on 5 November 2025 at 95,363 miles passed cleanly with zero defects, indicating the vehicle is currently in a stable and roadworthy state. The maintenance trend is broadly improving, as the last two consecutive tests have been entirely advisory-free following a period of minor oil seepage. The mileage accumulation is consistent and typical for an eleven-year-old vehicle. Between the October 2022 test at 65,872 miles and the November 2024 test at 84,254 miles, the vehicle covered 18,382 miles in roughly two years, equating to approximately 9,200 miles annually. This rose slightly to 11,109 miles in the subsequent twelve months leading to the November 2025 test. This pattern suggests regular, sustained use rather than prolonged standing, which is generally beneficial for preventing the dried seals and component seizure associated with short-journey vehicles. A persistent oil leak appears on the record in both the November 2023 test at 75,650 miles and the November 2024 test at 84,254 miles, specifically noted as originating from the rear offside engine underside. While the tester classified it as not excessive on both occasions, the fact it has been flagged twice in consecutive years suggests a slow, chronic seep rather than a one-off spill. The clean pass in November 2025 indicates this may have been addressed, but a prospective buyer should physically inspect the engine underside for fresh wetness, paying close attention to the rear main seal, cam cover gaskets, and oil filter housing. Any fresh residue here would imply the repair was temporary or the leak has returned. Beyond the oil seepage, the absence of advisories on suspension components, brake performance, or structural corrosion across five consecutive tests is encouraging for a vehicle of this age and mileage. The 3.7-litre V6 petrol unit and automatic gearbox have presented no recorded faults. A test drive should still focus on smooth transmission shifts, any hesitation under acceleration, and whether the suspension remains composed over uneven surfaces, as these components endure significant stress at this mileage. Inspect the inner edges of all four tyres for uneven wear, which could hint at subtle alignment drift not severe enough to trigger a test failure but indicative of aging suspension bushes.