2017 Peugeot Boxer 2.0L Diesel · LN67 LFK

The defining mechanical concern with this Peugeot Boxer is the abrupt loss of roadworthiness compliance at the most recent test, following two years of clean passes in 2024 and 2025. On 2 May 2026 the vehicle initially failed on supplementary restraint system warning lamp indicating a fault, a Major category defect that points to an airbag or pretensioner circuit issue, and then failed again the same day for parking brake efficiency below requirements. While the vehicle ultimately passed on that date with no defects recorded, the dual failure sequence immediately before the pass means the advisory history is incomplete; the record does not show whether corrective work was carried out, whether components were simply reset, or whether the SRS warning lamp cleared on its own. This creates a degree of mechanical ambiguity around two safety-critical systems that have no prior history in the MOT log. With 121,290 miles recorded across roughly nine years, this Boxer is accumulating approximately 13,500 miles annually, a notably high workload for a vehicle of this type and age. There is a clear mileage gap between the 2024 and 2026 tests, with no recorded entry for 2025 until the March pass that year, suggesting either an out-of-sequence test pattern or possible SORN periods that may have allowed certain components to deteriorate from standing rather than wear. The high annual mileage will accelerate consumption of braking components, suspension bushes, wishbone joints, clutch material, and drivetrain bearings, while any extended standing periods raise the prospect of brake caliper seizure, dry-rot in flexi hoses, and corrosion on underbody pipework and subframes. The combination of heavy use and intermittent inactivity is particularly punishing for a commercial platform of this size. A prospective buyer should treat the SRS warning lamp failure as the priority verification point. The fault could stem from a loose connector beneath the seat, a failed seatbelt pretensioner, a clock-spring issue in the steering column, or a genuine airbag module fault, and it must be confirmed clear with a diagnostic tool rather than assumed resolved. The SRS lamp should be observed on ignition with no passengers seated and with the passenger seatbelt buckled to rule out a sensor rather than an actuator problem. The parking brake efficiency failure warrants inspection of the rear caliper mechanisms, handbrake cable adjustment, and the condition of the drum or disc surface where applicable; on a test drive the vehicle should be parked on a moderate incline and the handbrake applied to confirm it holds without excessive travel. Given the high mileage and the commercial nature of this vehicle, particular attention should be paid to the front suspension, where Boxer models are known to wear lower wishbone bushes, drop links, and anti-roll bar mounts well before this mileage threshold. On a test drive, listen for clonks or knocks over speed humps and uneven surfaces, particularly from the front nearside, and feel for any vagueness or wandering in the steering that could indicate worn track rod ends or top mount deterioration. The braking system should be assessed for pulling under pedal pressure, any judder through the pedal suggesting warped discs, and a binding sensation after release that points to a seized caliper. Finally, a thorough underbody examination for corrosion on the rear axle, brake pipes, and subframe mounting points is essential, as commercial Boxers frequently carry out winter work that accelerates structural rust formation.