2012 SEAT Leon 1.6L Diesel · KS12 XHW

The 2012 SEAT León’s most recent MOT, conducted just four months ago on 2 March 2026 at 141,637 miles, confirms it passed without any defects, marking a clean slate after a period of recurring issues. Prior to this, the vehicle’s maintenance history reveals a concerning trend of neglect between February 2024 and February 2025, where two consecutive tests—one a failure and the next a pass—highlighted persistent tyre damage, suspension leaks, and a critically compromised parking brake. The fact that these faults were not fully resolved before the 2025 pass suggests either rushed repairs or incomplete attention to underlying problems. While the latest pass indicates no immediate failures, the earlier pattern of repeated advisories on rear tyres, shock absorbers, and the sub-frame’s corrosion underscores a history of deferred maintenance that could now be resurfacing. The recorded mileage of 141,637 miles over 14 years suggests typical usage, averaging around 10,100 miles annually, though the gaps between tests reveal inconsistencies. The most notable interval is between the 2024 pass at 129,260 miles and the 2025 failure at 135,275 miles—a span of just 6,015 miles in under a year, yet one where critical faults went unaddressed. Conversely, the 2023 to 2024 period saw a more stable 8,091 miles over 12 months without issues, implying the vehicle was better maintained during that window. The abrupt accumulation of problems in early 2025, followed by a swift return to pass status, raises questions about whether the vehicle was driven less rigorously after the failure or if repairs were superficial. A buyer should prioritise an immediate inspection of the rear suspension components, particularly the shock absorbers, which exhibited light misting of oil in February 2025—a sign of potential internal wear. The rear sub-frame’s corrosion, while not deemed "seriously weakened" in 2025, warrants closer examination for progression, especially around welds and joints, as structural integrity degrades over time. The parking brake’s inoperability on one side in 2025 is a red flag; the system should be tested for consistent engagement and cable tension, as this failure mode often indicates neglected servicing. Finally, the rear tyres have a history of damage and wear, with the nearside tyre suffering both a nail puncture and perishing—this suggests the previous owner may have delayed replacements. All four tyres should be inspected for uneven tread, embedded debris, and signs of heat damage, with particular attention to the rear nearside’s condition.