2012 Ford Fiesta 1.4L Diesel · ST12 AAY

Widespread corrosion across the vehicle structure, subframe, and rear axle represents the primary mechanical concern for this Ford Fiesta. While the most recent test on 07 April 2026 resulted in a pass, the record shows a persistent and multi-year trend of structural advisories regarding corrosion in the front subframe, rear suspension components, and the vehicle structure itself. This pattern of degradation has been documented consistently since at least 2022, indicating that while the corrosion has not yet reached a level of failure, the underlying metalwork is subject to ongoing deterioration. The vehicle has covered 137,246 miles over its approximately 14-year lifespan, averaging roughly 9,803 miles per year. This usage profile is typical for a vehicle of this age and suggests consistent, moderate utilization rather than extreme high-mileage driving or long periods of stationary storage. Mechanically, this level of accumulation means that wear on consumable components such as suspension bushes, brake discs, and steering linkages is expected to be commensurate with the age and distance travelled, which is reflected in the various advisories recorded for these specific items. Prospective buyers should pay close attention to the steering and suspension systems during a test drive. The 2026 record notes slight free play in the steering rack, a defect that has appeared intermittently since 2020, and the 2025 record specifically flagged play in the steering rack inner joints. On the road, this may manifest as a vague or imprecise steering feel, or a slight wandering sensation at cruising speeds. Furthermore, the history of fractured coil springs and track rod end play suggests that the suspension geometry and component integrity should be closely monitored for any knocking or clunking noises when navigating uneven surfaces or speed bumps. Braking and structural integrity also require physical inspection. The record shows recurring advisories for front brake discs being worn, pitted, or scored, which can lead to pedal judder or reduced braking efficiency. Given the repeated advisories for corrosion on the subframe, rear axle, and general vehicle structure, a thorough visual inspection of the underside is essential to assess the actual depth of the oxidation. Any signs of significant scaling or thinning of the metal should be weighed against the advisory notes to determine the proximity of future structural failures.