2015 Vauxhall Insignia 2.0L Diesel · KU15 NBK

A recurring pattern of brake and suspension wear advisories across multiple test cycles defines the mechanical profile of this 2015 Vauxhall Insignia, with the brake disc condition noted in three separate tests spanning 2021 through 2026 and a coil spring flagged for corrosion in 2025. The vehicle has passed five of its six recorded tests, but the two failures recorded are notable: a dangerous tyre tread depth failure on both front tyres in 2022 and a major headlamp dipped beam failure in 2024, the latter occurring on the same day as a pass was issued, suggesting a repair between tests. The most recent assessment on 2026-03-02 resulted in a pass with advisories for oil misting on the offside rear shock absorber and front brake disc wear, indicating that while the car remains legally roadworthy, the accumulation of component-level concerns has continued rather than resolved. With 160,638 miles recorded over an eleven-year life, this Insignia averages around 14,600 miles per year, which sits well above the typical figure for a vehicle of this age and points to consistently heavy use rather than periods of inactivity. The mileage progression between tests is broadly even, with no significant gaps in the testing record or unexplained jumps in odometer readings, suggesting continuous service over the years. High annual mileage of this nature accelerates wear on consumables and mechanical components, and the repeated advisories on brake friction surfaces, suspension bushes, and tyres align with this usage profile. The appearance of a coil spring corrosion advisory after more than a decade of service is also consistent with a vehicle that has covered substantial mileage in varied conditions. For a prospective buyer, the brake system warrants close physical inspection on a test drive, as front disc wear has been flagged in four of the last five tests. Listen for any grinding, pulsing through the brake pedal, or vibration under heavy braking, which would suggest the discs have worn beyond the advisories previously recorded. Check the rear brake pad wear noted in 2021 to confirm whether replacements have since been carried out, and feel for any pulling to one side under braking that could indicate a binding caliper, a known issue on high-mileage Insignias. Inspect the front suspension arms and bushes, which were flagged in 2021, by pushing down firmly on each corner and listening for clonking or knocking noises over uneven road surfaces, and visually examine the bushes for cracking or excessive play. The offside rear shock absorber oil misting recorded in the latest test should be monitored closely, as this typically progresses to a more serious fluid leak over time. On a test drive, pay particular attention to any bouncing or excessive body roll over bumps, which would indicate the damper is losing its effectiveness. The nearside rear coil spring corrosion advisory from 2025 also merits a careful look underneath the vehicle, as corroded springs can eventually fracture, particularly on a car of this age and mileage. Finally, verify the headlamp function thoroughly, including both dipped and main beam settings on both sides, given the 2024 failure on the nearside dipped beam, and check the operation of all other exterior lighting to ensure no repeat issues are present.