2010 Vauxhall Insignia 2.0L Diesel · ST10 RLX

A pattern of structural and suspension corrosion advisories sits at the centre of this Insignia's recorded roadworthiness history, with the most recent test on 5 January 2022 passing but flagging corrosion on both the rear suspension components and the rear subframe. Earlier tests in 2018 and 2017 returned clean pass results with no recorded defects, so the trend is one of progressive deterioration rather than chronic defects throughout the vehicle's life. The 2018 test is particularly significant because it was failed on the same day as a pass, with both rear coil springs recorded as fractured or broken under a major defect category, a serious structural failure that would have caused noticeable ride height loss and noise over bumps before replacement. The later 2021 advisory for a worn front suspension arm pin or bush, combined with the 2022 rear corrosion advisories, suggests that wear and oxidation are now developing across multiple chassis areas and warrant close physical inspection. Against a 16-year platform age, the recorded 83,562 miles equates to roughly 5,223 miles annually, which is a notably low accumulation rate and points to either light running or extended periods of inactivity. The MOT history itself supports this, with gaps between tests, including a stretch from May 2017 to July 2018 and a longer interval from July 2019 to January 2021, suggesting the vehicle may have been off the road or used sparingly during parts of its life. Low annual mileage reduces wear on high-load drivetrain and braking components but tends to accelerate corrosion on underbody steel, drying of rubber bushes and seals, and moisture-related degradation in areas that benefit from regular heat cycling. For a prospective buyer, the rear subframe and suspension components flagged in 2022 should be examined closely on a ramp or over a pit, looking for advanced surface scaling, flaking, or any perforation around mounting points, crossmembers, and the trailing arm locations, as corrosion advisories recorded two years ago will have progressed. The fractured rear coil springs recorded in 2018 mean the replacements should be checked for ride quality and any clonking over uneven surfaces, and the front suspension arm pin or bush wear noted in 2021 warrants a physical check for play in the lower control arm by hand and listening for knocking through the steering when traversing speed humps or potholes. The two minor fail items from the same date, headlamp aim being too high on the nearside and a rear registration plate lamp not functioning with the position lamps, are trivial electrical checks but indicate that minor compliance items had been allowed to drift. Finally, given the low usage pattern, particular attention should be paid to brake feel, looking for a spongy pedal or seized calipers from lack of use, and to the condition of any rubber boots, gaiters, and underseal, which on a 2010 Insignia of this mileage history represent the most plausible sources of future MOT advisories.