2012 Vauxhall Insignia 2.0L Diesel · DF12 OBD

The most recent DVSA examination on 18 March 2026 resulted in a Pass, although the same date also records a Fail that was subsequently rectified, meaning the vehicle passed once a headlamp aim issue was corrected. The underlying advisories from this test, however, are notable and warrant close attention. An oil leak was flagged but deemed not excessive, a condition which should be monitored for progression as seals and gaskets on a 2.0-litre diesel or petrol unit of this age commonly deteriorate further. Both front and rear brake discs were identified as worn, pitted, or scored, suggesting surface corrosion and lipping consistent with the vehicle's mileage. Additionally, a rear service brake binding advisory suggests a caliper slide or piston issue that could lead to uneven pad wear, brake drag, and elevated fuel consumption. The minor windscreen damage, while not affecting the driver's view, should be inspected to ensure it does not worsen or contravene future visibility rules. The recorded mileage of 114,079 miles over a 14-year lifecycle equates to an annual average of approximately 8,148 miles, which is broadly typical for a vehicle of this age and indicates regular but moderate use rather than extremes of low or high mileage accumulation. The relatively even progression suggests the car has been driven consistently, which is generally favourable for preventing the standing-related issues that plague low-mileage examples, such as severe brake disc corrosion, seized calipers, perished coolant hoses, and 12V battery degradation from infrequent charging cycles. That said, the cumulative wear on consumable and suspension components at this mileage should be expected, particularly given the Insignia's known susceptibility to front suspension bush wear, coil spring fatigue, and anti-roll bar link failure. Prospective purchasers should confirm a fully stamped service book and ensure timing belt or chain intervals, whichever is applicable to the specific engine variant, have been observed. In terms of buyer guidance, the repeated brake disc advisories across both the 2025 and 2026 tests indicate a deteriorating braking system that will likely require disc and possibly pad replacement in the near term. On a test drive, listen for any grinding or pulsation through the brake pedal, which would indicate excessive disc lipping or warped rotors, and observe whether the vehicle pulls to one side under braking, suggesting caliper seizure or hydraulic imbalance. The rear brake binding advisory specifically warrants a check for heat emanating from the rear wheels after driving and uneven pad wear on inspection. The persistent oil leak should be investigated by placing clean cardboard beneath the engine after a period of standing to identify the source, which on this model commonly emanates from the cam cover gasket, sump plug, or turbo oil feed lines, and left unchecked can lead to emulsified coolant or low oil pressure events. Beyond the recorded defects, a physical inspection should encompass a thorough check of tyre sidewalls for cracking or perishing given the vehicle's age, even if tread depth remains adequate, as rubber degrades over time regardless of mileage. The coolant, brake fluid, and automatic transmission fluid if fitted should be assessed for service history, as these degrade on a calendar basis irrespective of use. The front constant velocity boot failure recorded in March 2024, which was clearly rectified prior to the subsequent pass, should be verified as a quality repair with no grease loss evident around the joint, and any subsequent test drives should be conducted in tight circles to listen for clicking or knocking that would indicate renewed CV joint wear. Finally, verify the operation of all headlamp aim following the recent adjustment, ensure the windscreen damage has not propagated into the driver's direct line of sight, and confirm the nearside rear indicator bulb is functioning with no further discolouration of the lens, which could otherwise attract a future failure.