2011 Ford Fiesta 1.4L Diesel · YK12 DNN

A dangerous rear tyre bulge recorded in the 2025 MOT, combined with recurring corrosion advisories on the rear coil springs, defines the mechanical narrative of this 2011 Ford Fiesta. The vehicle has consistently passed its annual tests apart from the 2025 failure, and the pattern shows a gradual build‑up of rear‑axle wear rather than an abrupt, isolated fault. The most recent pass on 22 December 2025 confirms that the registration‑plate lamp and front brake disc wear remain within acceptable limits, but the earlier dangerous tyre condition still demands immediate attention. At 97,048 miles over fifteen years the annual mileage averages roughly 6,500 mi, which sits comfortably within typical usage for a small family car of this age. There are no significant gaps in the MOT record, indicating that the vehicle has been regularly tested each year. This moderate mileage suggests that major power‑train components such as the engine and transmission are unlikely to have suffered excessive wear, but the cumulative distance does mean that wear items on the suspension, brakes and tyres will be approaching the latter stages of their service life. Prospective buyers should inspect the rear tyre for any bulges, separations or uneven wear, and verify that it has been replaced since the 2025 failure; a fresh tyre is essential before the car is driven on public roads. The rear coil springs have been flagged for corrosion in every MOT since 2021, so a visual examination for rust, cracking or loss of spring integrity is required, and a test‑drive should include listening for clunking noises over bumps that could indicate weakened springs or compromised mounting points. The rear shock absorber on the off‑side was noted with light oil misting in 2022, a symptom of seal wear that can lead to reduced damping; feel for excessive bounce or a soft feel when applying the brakes and over uneven surfaces. Front brake discs are listed as worn and pitted, so measuring disc thickness and checking for consistent pedal feel and any pulsation during braking is advisable. Finally, the rear exhaust outer skin corrosion and the discoloured rear direction indicators noted across several years point to exposure‑related wear; ensure the exhaust is free of holes and that the indicator lenses are clear and functioning, and replace the registration‑plate lamp that has been repeatedly inoperative. A qualified mechanic should confirm the condition of the rear suspension assembly, replace the tyre, and assess whether the coil springs or shocks need renewal, while also checking the brake discs for safe thickness. Addressing these specific items will bring the car back to a road‑worthy state and mitigate the risk highlighted by its MOT history.