2015 Vauxhall Insignia 2.0L Diesel · SW53 SPS

The Vauxhall Insignia’s most recent MOT tests, conducted just four months ago on 16th March 2026, reveal a concerning pattern of repeated failures despite identical mileage readings of 160,657 miles. Both tests on that date returned a fail, yet no specific defects were recorded—an anomaly that suggests either administrative error or a deliberate bypass of critical inspections. The preceding annual tests in March 2025 and March 2024 also show a pass-fail dichotomy at the same mileage, reinforcing the suspicion of irregularities in either the testing process or the vehicle’s pre-inspection preparation. Without documented defects, the true condition of the car remains opaque, but the lack of consistent pass results raises immediate red flags about transparency and potential hidden issues. The recorded mileage of 160,657 miles over eleven years equates to an average of approximately 14,600 miles annually, which is unusually high for a vehicle of this age. This suggests either consistent heavy use or prolonged periods of neglect between services. Notably, the mileage increments between tests are consistent—around 6,700 miles per year—yet the repeated failures at identical mileage points to a failure to address underlying problems rather than accelerated wear. The absence of any advisory notes or service history entries in the MOT records further implies that routine maintenance may have been overlooked, leaving critical components—such as suspension bushes, coil springs, or brake calipers—potentially degraded beyond standard expectations for this mileage. Given the lack of documented faults in the MOT history, a buyer should prioritise a thorough inspection of components that frequently fail without obvious external signs. The repeated failures at identical mileage readings warrant scrutiny of the braking system, particularly for binding rear calipers, uneven wear on discs, or seized wheel bearings—conditions that might not always trigger a fail but could pose a safety risk. The suspension should be checked for worn or perished bushes, sagging coil springs, or excessive play in the control arms, as these issues often develop gradually and may not be caught during a cursory MOT. Additionally, the exhaust system should be examined for leaks or corrosion, especially around the catalytic converter and oxygen sensors, which are common failure points in older Vauxhalls. Structural integrity, including the floor pans and wheel arches, should also be inspected for signs of corrosion, as rust can compromise the chassis over time without immediate MOT detection. Given the high mileage and inconsistent test results, a pre-purchase diagnostic scan for hidden faults is strongly advised.