2012 Vauxhall Insignia 2.0L Diesel · MB12 UTB

A pattern of recurring rear suspension and braking component wear defines the mechanical history of this 2012 Vauxhall Insignia, with two MOT failures and a cluster of related defects emerging over the last three test cycles. The most recent examination on 21 January 2026 returned a clean pass with no advisories recorded, which on the surface suggests stable roadworthiness, but this follows a failure on 7 February 2025 that identified a fractured offside rear coil spring, a dangerous offside rear hydraulic brake caliper with braking performance affected, and a parking brake efficiency below requirements. Notably, the same vehicle returned to the test station just four days later on 11 February 2025 and passed, indicating the major items were rectified quickly, though the rear tyre edge wear advisories remained unaddressed at that point. The earlier failure on 24 January 2024 was less severe, with the only prohibiting item being front direction indicator colour, while a persistent advisory that day noted the offside rear service brake binding. Combined, the record shows a rear axle that has repeatedly demanded attention, with coil springs, calipers, brake mechanisms, and tyres all flagged in close proximity. With 165,381 miles recorded across approximately 14 years, the vehicle has averaged around 11,800 miles per year, which sits comfortably within typical usage parameters for its age and avoids the concerns associated with either very low or exceptionally high annual accumulation. The MOT testing cadence has remained annual without any extended gaps, suggesting continuous road use rather than long periods of standing, which is positive for avoiding the sort of seized calipers, deteriorated rubber, and stale brake fluid that afflict laid-up vehicles. However, the absolute mileage places this Insignia in the upper third of working examples, meaning that consumables such as brake discs and pads, suspension bushes, driveline mountings, and clutch or transmission components will have already absorbed substantial wear cycles. The mileage progression between tests appears steady, with no anomalous jumps that would suggest clocking or missed recordings, giving confidence that the odometer reflects genuine use. For a prospective buyer, the rear axle should be the primary focus of any physical inspection and test drive, given the documented coil spring failure, caliper damage, and brake binding advisories. On the road, listen for clonking or rattling noises from the rear over uneven surfaces, which could indicate fatigued springs or perished mounting rubbers, and pay particular attention to whether the offside rear feels lower than the nearside when stationary, as a fractured or weakened spring may not always be visually obvious. Brake pedal feel warrants close evaluation: any excessive travel, judder under firm application, or pulling to one side under braking could point to remaining caliper issues or warped rear discs, especially since a binding caliper was flagged as recently as 2024. The parking brake should be tested on an incline to confirm it holds firmly without creep, given the 2025 failure for efficiency below requirements. The persistent rear tyre edge wear advisories across both 2025 entries suggest an alignment or suspension geometry concern that may not have been fully resolved, and a prospective buyer should inspect both rear tyres for uneven inner or outer shoulder wear. A four-wheel alignment check would be a sensible precaution, as worn rear suspension bushes can mimic alignment problems and may not produce obvious movement until the wheels are unloaded. The 2022 advisories for offside front shock absorber oil misting and nearside front lower suspension arm rear bush wear indicate that the front suspension is also showing its age, so listen for any knocking from the front end over speed bumps or rough tarmac and check for inconsistent tyre wear across the front axle. Finally, with the front brake pads noted as wearing thin in 2023, a thorough inspection of pad life and disc condition on both axles is advisable, along with verification of recent replacement of the rear coil spring, caliper, and any associated braking components to confirm the 2025 failure items were addressed with quality parts rather than temporary fixes.