2014 Ford S-MAX 2.0L Diesel · MK14 ADX

The 2014 Ford S-Max has demonstrated a concerning pattern of MOT instability, with two consecutive failures in February 2025 at 88,189 miles, despite passing the previous test just three days earlier. The most recent failure in April 2026 at 101,625 miles—just three months ago—indicates unresolved issues rather than a sudden spike in wear. While no specific defects were recorded on any test, the repeated failures suggest either a systematic oversight in pre-MOT maintenance or underlying mechanical inconsistencies that evade standard inspection. The lack of advisories or defect codes further complicates diagnosis, as the tester may have deemed faults minor enough to pass without formal recording, a practice that risks masking serious trends. The mileage progression reveals a steady but typical accumulation of around 8,500 miles annually, with no abrupt jumps or prolonged stagnation. The gap between the November 2023 and February 2024 tests—just under four months—aligns with the standard 12-month MOT cycle, though the vehicle was tested twice in February 2025, suggesting either a rushed attempt to avoid a failure or a genuine concern from the previous owner. The recorded mileage at the most recent failure (101,625) is consistent with the vehicle’s age, ruling out extreme neglect or overuse as primary causes of instability. Given the repeated failures without recorded defects, a buyer should prioritise a thorough inspection of suspension components, particularly the rear axle and bushes, as these are common sources of intermittent MOT failures. Binding brakes or uneven wear on discs or drums—often overlooked unless dynamically tested—could explain the failures, as could minor corrosion in wheel bearings or steering linkages. The absence of advisories also warrants scrutiny of the exhaust system for subtle leaks or catalytic converter efficiency, as these are frequently flagged in Ford models of this era. Structural integrity, particularly around the sills and wheel arches, should be checked for hidden corrosion, as this can compromise the chassis over time without immediate MOT consequences. Independent dynamometer testing may be necessary to confirm brake performance and suspension responsiveness.