2015 Peugeot Partner 1.6L Diesel · MM64 UOS

A chronic corrosion issue affecting the rear coil springs dominates the mechanical history of this 2015 Peugeot Partner, evidenced by the fact that both nearside and offside rear springs were flagged as corroded on three consecutive tests, culminating in a Major failure on 2026-02-09 when the offside front coil spring was found fractured or broken alongside a failed nearside front position lamp. The offside front coil spring fracture represents a serious safety failure as a broken spring can detach and puncture a tyre or cause loss of control, while corroded rear springs indicate progressive structural degradation of the suspension. That same test also recorded a deteriorated engine mounting with excessive movement, which if left unaddressed can transmit vibration through the chassis and potentially allow engine movement under load. The vehicle subsequently passed a retest on 2026-02-13 with the rear spring advisories remaining but no further coil spring issues documented, and the most recent test on 2026-07-23 returned a clean pass with no advisories recorded, suggesting the fractured spring and engine mount were replaced in the intervening months, though the persistence of rear spring corrosion warrants ongoing vigilance. With 65,330 miles recorded over eleven years, this Partner has covered only around 5,939 miles annually, which is substantially below average for a commercial-derived vehicle and points to either light-duty private mileage or extended periods of inactivity. Such low accumulation typically means less wear on major drivetrain components and clutch life, but it can also accelerate corrosion on underbody items such as springs, brake lines, and subframe surfaces due to moisture sitting on unprotected metal during lay-ups without the drying effect of regular use. The mileage recorded between tests is consistent with this low usage pattern, showing modest increments rather than the rapid increases that often accompany fleet operation. For a prospective buyer, the most pressing physical inspection should focus on the suspension system given the documented history. Both rear springs must be examined for surface corrosion and any loss of ride height, and the front springs checked for cracking near the lower coils where fractures typically initiate on coil-sprung PSA platforms. Listen on uneven roads for clonking or knocking from the front suspension, particularly over sharper undulations, which would indicate worn anti-roll bar linkages given the slight play flagged on the nearside front upper ball joint in February 2025, and feel for vagueness or rattle through the steering wheel during direction changes. The lower engine mounting should be inspected visually by looking for cracked or separated rubber, and the engine rocked in gear with the handbrake applied to detect any movement beyond a few millimetres, as excessive play confirms deterioration. Braking behaviour also merits a structured assessment given the 2024 advisories showing thin pad material, a binding nearside front caliper, and tyres worn heavily on the inner edge to the point of being void of tread. On a test drive, listen for any rubbing or scraping from the nearside front wheel indicating the caliper may still be seizing, and check for the vehicle pulling to one side under firm braking, which would suggest a binding piston or uneven pad wear. Inner-edge tyre wear on the offside front is particularly indicative of suspension geometry misalignment, often caused by worn wishbone bushes or a deteriorated anti-roll bar link, so a current geometry check is advisable along with a close look at all tyre shoulders and sidewalls for uneven wear patterns. Given the 2025 advisory of a TPMS light remaining on, the tyre pressure sensors should also be verified as functional, as persistent illumination can mask genuine pressure losses on a vehicle already prone to uneven contact patch wear.