2007 Citroen C1 1.0L Petrol · NU07 RGO

The most recent MOT, carried out on 25 April 2024, was passed but returned a series of advisories covering the hazard‑warning switch, rear brake pipe corrosion, front sub‑frame corrosion, rear axle corrosion and a front headlamp with surface product. Earlier in the same week the vehicle failed on a separate test due to a major exhaust lambda fault, severely worn front brake disc and dangerously thin front pads. Over the past six years the record shows a pattern of intermittent failures (2022‑04‑30, 2020‑12‑17) interspersed with passes that still carry multiple advisories. The trend is therefore one of persistent, largely corrosion‑related and wear‑related issues rather than a clear improvement, although the most recent pass indicates that the critical safety items flagged in the failure have been remedied. At 133 879 mi the car averages just over 7 000 mi per year, which is modest for a 2007 model. The mileage suggests the vehicle has not been subjected to high‑stress, high‑speed use, but the relatively low annual distance also raises the possibility of prolonged periods of standing, especially given the recurring corrosion on brake pipes, rear axle and sub‑frame. Such standing can accelerate rust on steel components and promote tyre perishing, while also allowing brake discs and pads to develop uneven wear if the vehicle is not moved regularly. The mileage is therefore consistent with a lightly used car that may have spent significant time idle, a factor that should be reflected in the condition of suspension bushings, brake hardware and tyre integrity. A prospective buyer should give particular attention to the braking system. Inspect both front and rear brake discs for scoring, pitting or excessive rust, and verify that the pads are at least 3 mm thick; any thickness below 1.5 mm, as previously recorded, is unsafe. Examine the rear brake pipes and ferrules for corrosion, especially where grease or other material was noted, and check for any signs of leaking fluid or reduced pedal firmness, which could indicate pipe degradation or a failing master cylinder. The exhaust lambda sensor should be tested for proper voltage output, as a fault can cause poor fuel economy and increased emissions. Verify that the hazard‑warning flashers operate correctly and that the headlamp aim is within legal limits, as the off‑side headlamp was previously out of alignment. During a test drive listen for any clunking from the front lower suspension arm ball‑joint area, feel for any steering wobble that might point to a worn ball‑joint dust cover, and note any exhaust rumble or irregular idle that could betray a lingering lambda or exhaust leak. Given the vehicle’s age, a thorough visual and tactile inspection of age‑related items is essential. Check all tyre sidewalls for cracking, perishing or bulging, particularly the near‑side rear tyre that has been flagged as slightly damaged in the past; replace any tyre that shows signs of dry rot even if tread depth appears adequate. Inspect the chassis and under‑body for rust, especially around the rear axle and sub‑frame where corrosion has been recorded, and confirm that any protective coatings are intact. Test the 12 V battery voltage and assess its ability to hold charge, as batteries over 15 years old often fail unexpectedly. Finally, ensure that all fluid reservoirs (engine oil, brake fluid, coolant and gearbox oil) have been changed in accordance with calendar intervals, and request service stamps confirming recent replacements of brake fluid and coolant, which are critical for a vehicle that may have been stationary for extended periods.