2008 Daihatsu Sirion 1.0L Petrol · AV08 AAO

The most recent MOT tests for this 2008 Daihatsu Sirion, conducted on 9 July 2024 at 80,569 miles, reveal a concerning pattern of two consecutive failures on the same day —despite no defects being recorded. This anomaly suggests either a rare administrative error in the DVSA system or, more likely, that the vehicle passed an informal pre-test inspection but failed critical elements during the official examination. The previous test cycle in July 2023 at 74,758 miles also resulted in two entries—one pass, one fail—without specified faults, indicating a persistent lack of clarity in the vehicle’s roadworthiness. The 2022 test at 66,287 miles was clean, but the repeated failures in the last two cycles imply either a failure to address underlying issues or a pattern of neglect in maintenance. Without specific defect details, the trend leans towards instability, particularly if the vehicle was not repaired between tests. The recorded mileage of 80,569 miles over 18 years—approximately 4,476 miles annually—is unusually low for a vehicle of this age, suggesting either infrequent use or prolonged periods of inactivity. The gap between the 2022 and 2023 tests (8,471 miles in a year) and the 2023 to 2024 gap (5,811 miles) is consistent but does not indicate aggressive driving. However, low mileage does not preclude wear; rather, it may mask deferred maintenance, as components like suspension bushes, coil springs, and brake calipers degrade over time regardless of distance travelled. The absence of advisories in any test suggests no immediate structural concerns were flagged, but this does not rule out hidden corrosion or gradual deterioration in areas like wheel arches or underbody panels. Given the lack of specific defect details in the MOT history, a buyer should prioritise an independent inspection of high-wear areas that often fail silently. The suspension—particularly rear bushes and coil springs—should be examined for cracking or excessive play, as these components frequently fail without warning in vehicles of this age. Brake systems, including rear calipers and discs, warrant close scrutiny, especially if the vehicle was driven through the failed tests without repair; binding or uneven wear could indicate past neglect. Underbody corrosion, particularly around the sills, subframe, and exhaust system, is a common issue in Daihatsu Sirions and should be assessed for structural integrity. Tyres, despite no recorded failures, should be checked for uneven wear patterns that could suggest alignment or suspension issues. Finally, the engine bay should be inspected for fluid leaks, as these often precede more serious mechanical failures. The repeated MOT failures, even without clear defects, justify thorough scrutiny of these critical systems.