2004 Smart Forfour Passion CDI 95 1.5L Diesel · WU54 LSK

A pattern of recurring suspension wear and brake imbalance dominates the mechanical story of this 2004 Smart Forfour, with advisories for front lower‑arm bush wear, rear brake force distribution and thinning front pads appearing on almost every test; the latest MOT on 30 January 2026 was a pass but still recorded the rear‑brake imbalance and front‑disc condition advisories, confirming that the underlying issues have persisted rather than resolved. At 151,116 mi over 22 years the vehicle averages roughly 6,900 mi per annum, a figure that sits comfortably within normal usage for a car of this age. The MOT history shows annual testing with no prolonged gaps, indicating the mileage has been accumulated steadily rather than in large, sudden spikes that could accelerate wear. Nevertheless, the combination of moderate mileage and the age‑related wear items recorded—particularly the suspension bushings and brake components—means the consumables that typically require replacement at this stage are likely approaching the end of their service lives. For a prospective buyer the brake system should be inspected thoroughly. Verify that the rear‑brake balance is corrected and that the front discs are not excessively scored; feel for any pedal judder or uneven bite that would corroborate the “thin pad” advisory. The front lower‑arm pins and bushes, flagged repeatedly as worn, should be examined for excess play or knocking over bumps, and replacement is advisable if any movement is felt. The rear wheel bearing noted as rough on the 31 January 2023 failure must be checked for grinding or looseness, and the rear shock’s light oil mist suggests a seal leak that could affect ride quality and tyre wear. Lighting and drivetrain seals also merit attention. The rear fog lamp has failed on multiple occasions and the side repeater lens remains defective, so verify operation of all rear and side lamps before purchase. The constant‑velocity boot on the nearside front inner drive‑shaft was recorded as severely deteriorated; inspect for grease leakage and any clicking noises that could indicate impending joint failure. A comprehensive pre‑purchase inspection that includes brake service, suspension bush and pin replacement, wheel bearing replacement, and CV‑boot renewal will address the recurring advisories and bring the vehicle to a reliable road‑worthy state.