2009 Ford Fiesta 1.2L Petrol · OO09 GOO

The defining mechanical theme for this 2009 Ford Fiesta is a suspension and braking system that has been gradually surfacing wear issues across multiple test cycles, culminating in a failure at the most recent assessment on 9 December 2025. That test recorded two major defects: an exhaust lambda sensor reading outside specified limits after the second fast idle, and an excessively worn offside front suspension arm ball joint at the wishbone. Despite these majors, the vehicle was issued a pass on the same date once the items were presumably addressed or reclassified, though the brake disc advisories for both nearside and offside front inner discs being pitted and scored were carried forward from the failure onto the pass record. Looking back through the history, suspension arm bushes at the rear have been flagged as worn at both the 2024 and 2023 tests, and an offside front suspension arm bush was also noted in 2023, establishing a clear pattern of front and rear suspension wear that has been progressing for at least three consecutive MOT cycles. The 2022 test was clean, which marks the point before the deterioration became MOT-visible. Against a 17-year vehicle age, the recorded mileage of 36,965 miles equates to an average of roughly 2,174 miles per year, which is notably low and indicative of a car that has either been used only for short local journeys or has experienced extended periods of inactivity. From a mechanical standpoint, this usage pattern is not unambiguously favourable. Low annual mileage tends to concentrate short cold-start cycles, which can accelerate exhaust sensor degradation and is consistent with the lambda sensor failure recorded in December 2025. Equally, extended standing periods allow moisture to settle in braking components, corrosion to initiate on ferrous parts, and rubber bushes and ball joints to deteriorate through dry rot and oxidation rather than through mechanical wear. The recurring suspension advisories across three test cycles therefore align well with a vehicle that has spent significant time stationary between infrequent runs. For a prospective buyer, the front suspension is the priority area for physical inspection, given the recorded wishbone ball joint failure and the multi-year advisory history on both front and rear beam axle bushes. On a test drive, listen for clonks or knocking from the front end when traversing speed bumps, kerbs, or uneven road surfaces, and pay particular attention to any vagueness in steering response or a tendency for the front end to dart over rough tarmac, both of which are symptomatic of worn ball joints and deteriorated bushes. With the engine idling, check for any unevenness or rough running that might suggest the lambda sensor issue has recurred, and watch the exhaust for excessive smoke at startup that could indicate a failing catalytic converter or oxygen sensor. It is also worth asking whether the major defects recorded on 9 December 2025 were rectified before the pass was issued, and requesting documentation, as the advisory items carry forward between the two test entries on that date and confirm that the brake disc wear was present at the point of failure. The braking system warrants equally close attention because the front inner discs on both sides were flagged as pitted and scored at the 2025 test, a condition typically caused by corrosion accumulating on the disc face during periods of light use rather than through pad wear. On the road, test the brakes firmly from around 40 mph and feel for any pulsation through the brake pedal or vibration through the steering wheel, which would indicate disc runout or thickness variation severe enough to require machining or replacement. At low speed, listen for any grinding or scraping that suggests the wear has progressed since the test. Also check the rear exhaust heat shield noted as slightly loose in December 2025, as a rattling noise from beneath the car at idle or low engine speeds would confirm it has worked further loose. Given the suspension wear pattern, it would be prudent to budget for replacement of the front wishbone, the beam axle bushes, and the front brake discs as foreseeable items, and to have the vehicle raised on a ramp to check for any corrosion on the underbody, subframe, and brake pipes before committing to purchase.