2017 SEAT Leon 1.4L Petrol · YA17 OZP

The defining mechanical feature of this 2017 SEAT Leon's MOT history is a recurring pattern of light oil misting from the front shock absorber, which first appeared as an advisory at the 2022 test and was noted again in 2023. Since that point, the two most recent examinations in January 2025 and January 2026 have returned clean passes with no recorded advisories, suggesting either that the affected damper has been replaced or that the seepage remains below the threshold for flagging. It is worth emphasising that oil-misting advisories on telescopic dampers typically indicate that the internal seal is beginning to fail; the component may still function within acceptable limits at MOT inspection speeds, but the deterioration tends to progress gradually. Six tests are recorded across roughly an eight-year period, with no outright failures present, and apart from the suspension advisories the only other note is a six-month COVID-19 extension applied in 2020. Recorded mileage at the most recent test stands at 80,958 miles on a vehicle now nine years old, which equates to an annual accumulation of approximately 8,995 miles per year, a figure consistent with typical mixed private and commuter use. The progression between tests appears steady rather than erratic, with no obvious extended gaps in testing or sudden mileage jumps that would point to a period off the road followed by heavy use. This kind of average annual mileage suggests moderate wear on consumables such as brake pads, discs, tyres, and clutch components, and broadly typical ageing of suspension bushes, drop links, and anti-roll bar mountings. Given the vehicle's age and mileage, rubber-mounted components and engine-mount bushings should be regarded as items approaching mid-life serviceability. With the front shock absorber advisories being the principal mechanical lead, a prospective buyer should pay close attention to the behaviour of the front suspension on a road test. Listen for any knocking, clonking, or clonking-over-bumps from the nearside front corner, particularly over uneven surfaces or when traversing speed humps at low speed. The nearside front should also be observed for any excessive bouncing after being pushed down firmly at the corner, as a damped-down oscillation that takes more than one or two cycles to settle indicates reduced damper effectiveness. When cornering or braking firmly, any pitching, wallowing, or uneven body control suggests the damping is compromised. On the nearside rear, where oil misting was also flagged in 2022, similar symptoms should be checked, although the rear dampers typically degrade less noticeably in day-to-day driving. The tyre wear pattern should also be examined, as uneven inner or outer shoulder wear can be a secondary indicator of weakened damping. Beyond the suspension, a test drive should also cover the items one would normally expect to inspect on a SEAT Leon of this age and mileage. The brake pedal should feel firm without excessive travel or sponginess, and there should be no vibration through the steering wheel under firm braking, which would suggest disc runout. Steering response should be precise, with no knocking from the front end over rough roads that would indicate worn drop links or anti-roll bar bushes, and no clonking from the steering rack inputs. The clutch should engage smoothly without slipping under load or any judder when pulling away in first gear. Finally, the vehicle should be started from cold and left to idle while listening for any irregular ticking from the engine or excessive smoke from the exhaust, and all warning lights on the instrument cluster should extinguish promptly after ignition. The MOT record itself does not establish mechanical soundness or maintenance quality beyond the items tested, so this on-road appraisal remains essential.