2016 Vauxhall Insignia 1.6L Diesel · FN16 BCX

The most recent DVSA MOT test, conducted on 27 October 2025, resulted in a failure, although no specific defect entries have been recorded against that test on the official record. This is an important point of clarification for any prospective purchaser, as it is unusual to see a fail outcome without an associated reason, and it is strongly recommended that the previous keeper or seller provides the actual refusal-to-issue certificate so the exact cause of failure can be established before proceeding. Despite this anomaly, the underlying trend from the preceding four tests is one of consistent compliance, with passes recorded in October 2024, 2023, 2022, and 2021, each returned without advisories or defects noted. Taken as a whole, the maintenance pattern suggests the vehicle has been generally well kept across the recent test history, but the most recent adverse outcome warrants direct verification rather than assumption. With an odometer reading of 84,260 miles on a vehicle now approaching ten years of age, the average annual mileage equates to roughly 8,400 miles per year, which sits comfortably within expected parameters for a car of this type and age. There is no evidence in the recorded mileage progression of any unusually long gaps that would suggest extended periods of standing, nor any sharp escalation that would point to exceptionally high usage, so mechanical wear on consumables and drivetrain components should be broadly proportionate to the miles covered. Given that this Insignia is now on the older side of its service life, even average mileage will have placed meaningful demand on items such as the clutch, turbocharger, suspension components, and braking system, all of which warrant physical scrutiny rather than reliance on the MOT record alone. In the absence of recorded advisories, the buyer inspection must be guided primarily by the calendar age of the vehicle and the known wear characteristics of a ten-year-old Vauxhall Insignia. Tyres should be examined closely not only for tread depth but for sidewall perishing and cracking from age, as rubber compounds harden and deteriorate with time regardless of remaining tread, and any tyres approaching or beyond six years from their date code should be replaced regardless of legal wear. The braking system should be inspected for disc corrosion, particularly on vehicles that may have seen periods of light use or short journeys, and the calipers should be checked for seizing or binding, which is a known issue on Insignias of this generation and can manifest as uneven braking, pulling to one side, or hot wheels after driving. The exhaust system, including the flexible joint and rear sil box, is prone to corrosion on later-life examples and should be raised on a ramp or examined from beneath for signs of rust perforation, while the suspension should be assessed for worn lower wishbone bushes, drop link deterioration, and cracked coil springs, all of which are recurring weaknesses on this chassis. Beyond the mechanical items, age-related deterioration extends to areas that an MOT cannot fully assess, and these should form part of a pre-purchase inspection. The 12-volt battery is likely approaching or past its expected service life and should be load tested, as a marginal battery will pass an MOT by virtue of the engine starting but cause no-start issues in colder weather. Brake fluid and engine coolant absorb moisture over time and should have been renewed on a time basis rather than purely on mileage, with brake fluid typically requiring replacement every two to three years to prevent internal corrosion within the brake calipers and ABS modulator. Coolant systems on Insignias can suffer from minor leaks at the water pump and thermostat housing as sealing gaskets harden with age, and a cold inspection for dried coolant residue or pressure testing is advisable. Finally, the timing chain and balance shaft components on certain Insignia diesel engines are known wear items at this mileage, so any history of cambelt or chain replacement should be verified in the service documentation, and any diesel-specific DPF warning lights or regeneration issues should be raised with the seller before purchase.