2016 Vauxhall Insignia 1.6L Diesel · DX16 VST

A clear pattern of front and rear suspension wear has emerged on this Vauxhall Insignia during the latter stages of its MOT history, with the most recent test on 18 December 2025 flagging multiple suspension-related advisories and minor defects alongside a pass. Both rear shock absorbers were noted as having reduced damping effect, both front suspension arm ball joint dust covers were recorded as severely deteriorated, and both front suspension arm pins or bushes were identified as worn though not yet at the excessive movement threshold. This follows a 2021 advisory for an offside rear upper suspension arm pin or bush, suggesting the suspension has been gradually deteriorating rather than suffering a single isolated incident, although the intervening tests in 2022, 2023, and 2024 passed without recorded defects. The only outright failure across the record is a 2024 present-and-repeat stop for nearside headlamp aim being too high, which was corrected immediately and did not reappear in subsequent testing. The mileage profile is consistent with sustained high-mileage use, as 123,917 miles accumulated over approximately ten years equates to around 12,400 miles per year, which sits well above the national average and places elevated demand on consumables, braking components, and drivetrain wear items. There are no multi-year gaps in the MOT history that would suggest extended periods off the road, with annual or near-annual testing recorded consistently from 2019 onwards, indicating regular use rather than long-term storage. At this annual mileage, items such as brake pads and discs, tyres, and suspension components would typically have undergone multiple replacements over the vehicle's life, although the recent advisories suggest some of those renewals may now be approaching again. For a prospective buyer, the immediate priority on inspection should be the suspension system, given the cluster of advisories recorded at the latest test. On a road test, listen for knocking or clonking noises from the front end over speed humps and uneven surfaces, as worn front arm pins or bushes and deteriorated ball joint dust covers can permit play that transmits as audible impacts and may eventually progress to a test failure. Pay particular attention to ride quality over undulating roads, as reduced rear shock damping will manifest as continued bouncing after crests and a generally unsettled feel. With the vehicle jacked, the front ball joint dust covers should be inspected for splits that allow grease escape and grit ingress, as their severely deteriorated condition could accelerate joint wear, and the front arm bushes should be physically checked for cracking or excessive movement by levering with a pry bar. The rear shock absorbers should be examined for fluid seepage around the piston rod and for any signs of corrosion at the upper mounting points, particularly given the vehicle's age and winter road exposure. A targeted braking check is also advisable, as the high annual mileage implies that pads and discs will be approaching the limit of their service life even without a recorded advisory. On the road, the pedal should feel firm without excessive travel, and any vibration or judder under firm braking would suggest disc warping typical of high-mileage vehicles. Headlamp alignment should be verified against a flat wall, as the 2024 failure demonstrates a historical tendency for the nearside unit to drift high, which can both fail an MOT and cause glare for oncoming traffic. Beyond the recorded items, the underside should be examined for any developing corrosion on subframe, brake pipes, and sill areas, as these are common MOT failure points on Insignias of this generation and would not yet be reflected in the relatively clean earlier test entries.