2007 Vauxhall Signum 1.9L Diesel · KV07 AAF

The most recent recorded DVSA test on this 2007 Vauxhall Signum took place on 15 October 2022 and resulted in a PASS, although it carried forward an advisory relating to light oil misting on the offside front shock absorber. Just two days earlier, on 13 October 2022, the vehicle failed on more serious grounds, with dangerous defects recorded against both rear tyres for sub-1.6mm tread depth and major defects against both front wiper blades for ineffective clearing of the windscreen. The earlier 2021 test also passed but flagged pitted or scored front brake discs and oil misting on the offside rear shock absorber. Taken together, the pattern suggests a vehicle that is fundamentally roadworthy on test day but is accruing age-related wear on its suspension damping, braking surfaces and consumables. There is no strong evidence of either steady improvement or rapid decline; rather, the trend points to a car requiring attentive upkeep of consumable and underbody components typical of a high-mileage European executive hatchback approaching two decades of service. With 113,346 miles recorded against a 2007 registration, this Signum averages around 5,966 miles per year, which is well below the typical figure for its class and age. Such modest annual use suggests either a low-commuting lifestyle or, more likely given the advisories recorded, substantial periods of standing between uses. Either interpretation carries mechanical implications. Lower mileage reduces wear on engines, gearboxes and clutches but simultaneously promotes standing-related deterioration, including brake disc corrosion and potential caliper seizure, electrolytic degradation of the 12V battery, drying and perishing of rubber components such as tyres, hoses, drive belt, suspension bushes and gaiters, and the calendar-based expiry of brake fluid, coolant and engine oil additive packages regardless of the odometer reading. The fact that the rear tyres were found below the legal tread limit in 2022 is consistent with age-hardened rubber losing grip rather than simply wearing down through use. A prospective buyer should place particular emphasis on the suspension and braking items flagged across both test entries. The recurring advisory for oil misting on the offside front shock absorber indicates the gas-hydraulic seal has begun to weep, a condition that typically progresses to visible streaking, a dampness on the body of the strut, reduced damping efficiency and, on test drive, a noticeable looseness or secondary bounce over undulations, particularly at low speed over speed humps. The offside rear shock was similarly flagged in 2021 and warrants a close inspection for any progression. Given the five-year gap in DVSA records visible here, a thorough underbody examination is essential: the buyer should look for fresh oil staining on either front strut, check for perished front coil springs (a known weakness on this chassis), and examine the condition of the front brake discs, which were already pitted in 2021. Pitted discs may now exhibit shudder under braking, require skimming, or necessitate replacement if corroded beyond service limits; the caliper slide pins and handbrake mechanism should be checked for free movement and the rear calipers for binding following extended standing. Beyond the items flagged in the MOT history, the calendar age of nineteen years demands a comprehensive inspection of time-sensitive components. Tyres should be examined not only for tread depth but for sidewall cracking, perishing and the DOT date code, as rubber over nine years old is prone to hardening and loss of grip even with adequate tread. The 12V battery should be load-tested, as a battery older than six years is likely to be near the end of its service life and will fail without warning in cold conditions. Brake fluid, which is hygroscopic and nominally replaced every two years, and coolant, typically replaced on a four to five year cycle, should be confirmed against the service record regardless of the modest annual mileage. Other priorities include verifying the timing belt and balance shaft belt replacement history, a known service item on the 1.9 or 2.2 CDTi units commonly fitted to the Signum and overdue by this age, inspecting the condition of the exhaust system for internal corrosion, ensuring the dual-zone climate control and electric window regulators operate correctly, and confirming that the automatic or manual transmission fluid has been refreshed. Finally, on a test drive, listen for suspension clonks over uneven surfaces, any knocking from the front lower wishbones, transmission shunt on changes, and observe whether the steering remains centred and free of vibration, all of which are common age-related concerns on this model.