2009 Daihatsu Sirion 1.0L Petrol · FN09 JHO

The most recent MOT test on the 2009 Daihatsu Sirion, conducted on 2026-04-10, resulted in a passing grade, though it revealed several persistent and concerning advisories that warrant careful attention. The overall maintenance trend over the past four years is neither significantly improving nor worsening—rather, it reflects a pattern of recurring issues that have been acknowledged but not rectified. While the vehicle passed each subsequent test, the recurring advisories on suspension components, brake wear, and drive shaft boot deterioration suggest that either maintenance has been inconsistent or the vehicle has been subjected to stress beyond typical wear rates. The most critical failure from 2020—major defects on the near-side front lower suspension arm ball joint and insecure mounting—remains unresolved, indicating either a failure to address these issues promptly or a systemic issue with the suspension design or installation. This history underscores the need for a thorough mechanical inspection to confirm whether the remaining advisories are symptomatic of progressive wear or if they are isolated instances. The recorded mileage of 114,524 miles for a vehicle aged 17 years represents a moderate annual usage rate of approximately 6,737 miles per year, which is within the expected range for a car of this age and class. However, the gap between the last major failure in 2020 and the most recent MOT suggests periods of either reduced or static usage, which can accelerate corrosion and wear in stationary components. For example, the advisories regarding corrosion on front suspension crossmembers and Macpherson struts, along with the structural corrosion advisory from 2022, imply prolonged exposure to moisture, particularly if the vehicle was stored without adequate protection. Additionally, the near-side front tyre showing wear close to the legal limit on edge suggests either underinflation, misalignment, or excessive cornering forces, which could exacerbate suspension and steering wear over time. While the mileage alone does not justify alarm, the combination of moderate usage and recurring advisories points to a vehicle that has likely been subjected to stress in certain systems, particularly the suspension and braking components. To proceed with a purchase, the prospective buyer should conduct a meticulous mechanical inspection, focusing on the suspension and braking systems, as these are the areas most affected by the MOT history. During the test drive, listen for unusual noises such as clunks or rattles from the front suspension, particularly around the ball joints and struts, which may indicate further wear or misalignment. Check for uneven tyre wear patterns, which could signal alignment or steering issues, and inspect the front tyres for signs of dry rot or sidewall cracking, as the near-side tyre advisory suggests potential edge wear. Inspect the front brakes for excessive heat discolouration, binding calipers, or corrosion on the discs and pads, as the thin pad advisories and worn disc pitting could lead to reduced stopping performance. Additionally, visually confirm the integrity of the drive shaft CV boots, as their severe deterioration in prior MOTs suggests they may have failed already or are nearing failure, leading to oil leaks or transmission issues. The oil leak advisory from 2020 should prompt a check for fluid under the vehicle, particularly around the engine bay and transmission area, as well as a test of the engine’s compression and oil consumption. For the vehicle’s age and mileage, the buyer should also verify the condition of the 12V battery, as prolonged standing can lead to corrosion or discharge, particularly in a car with a history of corrosion issues. Inspect the battery terminals for oxidation and ensure it holds a charge when tested. Check the fluid levels in all reservoirs, including the engine oil, coolant, and brake fluid, as fluid degradation over time—even without mileage—can compromise performance. The structural corrosion advisories from 2022 and 2021 highlight the importance of a visual inspection of the undercarriage and bodywork for signs of rust progression, especially in areas prone to moisture exposure. If the vehicle has been stored, confirm that it was covered or sheltered to mitigate weather-related damage. Finally, review the service history for any recorded suspension or braking work, particularly around the ball joints, struts, and brake components, as these are the most critical areas for this model’s age and usage profile. A professional inspection by a qualified mechanic would be advisable to confirm the absence of hidden issues and to address the unresolved suspension defects before purchase.