2004 Peugeot 406 2.0L Diesel · FG04 WYY

The 2004 Peugeot 406 presents a mechanical profile characterised by a pattern of intermittent failure that stabilised in late 2023. After a series of clean motoring periods from 2017 through early 2019, the vehicle experienced a cluster of serious MOT failures in 2019—two major disqualifying events followed by another failure later that same year—that suggest underlying structural or systems issues rather than simple wear. The most recent test on 2023-03-02 returned a clean result with no defects noted, indicating that the earlier problems have been resolved or mitigated, though the historical record reveals a vehicle that required attention to critical safety systems and alignment components at key intervals. The recorded mileage of 134,922 miles on a 22-year-old chassis translates to approximately 6,133 miles per annum, which aligns with expected usage patterns for a vehicle of this age. However, the gap between the 2019-08-30 failed MOT and the subsequent 2020-07-30 passed MOT represents a concentrated eight-month interval where the odometer advanced significantly, suggesting either increased driving frequency or extended periods of idling combined with periodic use. The persistence of the suspension arm ball joint issue from 2018 through 2019—flagged as a major fault involving both rear and front suspension assemblies—combined with the direction indicator colour errors and front headlamp aim deficiency in 2019 indicates that fundamental mechanical components were under stress during this period, potentially accelerating wear on suspension bushings, tie rod ends, and lighting assembly tolerances. Buyers should conduct a thorough physical inspection of the front and rear suspension arm ball joints, paying particular attention to any remaining play or looseness when the vehicle is in motion, especially when navigating bumps or turns. The direction indicator housing and associated wiring should be examined for continuity and correct colour coding, while the front headlamp aiming system requires verification that all four lamps illuminate at the proper height and that the beam pattern meets legal requirements. Given the 2019 failure involving multiple major safety-related systems, it is prudent to confirm that all electrical connections related to the directional indicators and front lighting are intact and free of corrosion, and to test the vehicle's handling response on varied surfaces to ensure no residual binding in the suspension linkages remains.