2019 Citroen C5 1.2L Petrol · SL69 OFC

The 2019 Citroen C5 presents a mechanical profile dominated by recurring brake system concerns despite showing occasional clean MOT results. Two separate failing tests in early 2026—one on 2026-02-24 and another on 2026-02-25—reveal a pattern of persistent rear brake hose corrosion to the ferrules and thinning rear brake pads, while the 2026-02-24 failure escalated to a dangerous condition with a bulging rear tyre resulting from structural separation. Although the most recent test on 2026-02-25 returned as passed, the lingering advisories for rear brake hoses and pads indicate that the underlying issues have not yet been resolved, leaving the driver with residual risks even on a technically passing certificate. At 56,807 miles after seven years of ownership, the vehicle accumulates approximately 8,115 miles annually—a rate consistent with normal usage for its age. However, the service history reveals notable inconsistencies: a failed MOT on 2024-02-12 followed by a pass just three weeks later, then another failure on 2026-02-24 before today's result. These gaps in regular maintenance suggest variable ownership commitment and potentially neglected follow-through on prior warnings, meaning the high mileage has likely accelerated wear on components already stressed by the earlier failures. The combination of substantial distance covered and irregular servicing creates a scenario where critical systems may be operating beyond their optimal range. The rear brake hose corrosion flagged in both late 2026 tests signals gradual internal degradation within the hose assembly itself, which can manifest as increased brake fade, pulsating pedal feel, or eventual hose rupture under load. When conducting a test drive, listen for any hissing or wetness along the rear brake line routing and check the brake pedal for any subtle vibrations or pulling sensations during hard braking. The repeatedly thin rear brake pads point to either uneven wear patterns or underlying disc damage; during the drive, apply moderate braking force and observe whether any grinding or squealing emerges, particularly when slowing down from speed. Both of these issues demand prompt attention before taking the car on the road. The 2024-02-12 failure involving the offside front outer drive shaft joint constant velocity boot split or insecure condition represents a more severe structural concern because the CV boot protects the differential fluid and maintains proper axle alignment. At 56,800 miles, this component has likely endured considerable flexing and thermal cycling, and a split boot would allow lubricant loss and potential contamination of the differential. On the test drive, monitor the front outer wheel for any play, wobble, or unusual noise during cornering, and inspect the drive shaft housing for signs of excessive play or fluid leakage around the CV boot area. Resolving this issue is essential to prevent catastrophic axle failure or loss of power transfer.