2017 Smart (mcc) Forfour 1.0L Petrol · SC17 DHX

The most recent DVSA examination on 23 June 2026 returned a PASS with no defects recorded, which is the favourable outcome a prospective buyer would wish to see. However, the broader test history suggests a vehicle whose condition warrants closer scrutiny rather than unqualified confidence. Prior to that pass, the car failed on 15 June 2026 due to exhaust emissions issues linked to a leak at the rear back box, with the tester unable to complete the emissions check as a consequence. The same test recorded advisories for inner edge wear on both front tyres and worn suspension arm pins or bushes at both front corners, the latter of which first appeared as an advisory in June 2025 and has now been flagged on both sides. An additional major defect was recorded on 30 June 2025 for an excessively worn offside front lower anti-roll bar linkage ball joint. The recurrence of front suspension advisories across consecutive tests, combined with the recent emissions failure, indicates a mechanical trajectory that, while currently within legal limits, is showing the early signs of wear progression common to a small city car approaching its tenth year of service. Recorded mileage stands at 51,776 miles over approximately nine years, yielding an annual average of around 5,750 miles. This figure is notably low for a Smart Forfour of this age and points towards a vehicle that has either seen predominantly light urban use or has spent considerable periods standing. Such low usage carries its own mechanical implications distinct from high-mileage wear. Standing periods accelerate corrosion on ferrous components, particularly brake discs which can develop surface rust and, in some cases, lead to binding calipers if the vehicle is left for extended intervals. Rubber components, including tyres, coolant hoses, drive belts, and suspension bushes, degrade on a calendar basis rather than purely through use, so a low-mileage nine-year-old car still demands careful age-related inspection. The MOT mileage gap between tests is broadly consistent, suggesting no sudden bursts of high use, but does not rule out extended lay-ups between annual checks. For a prospective buyer, the advisories and recent defects demand specific physical inspection and a careful test drive. The front suspension arm pin or bush wear, flagged on both sides and persisting across two consecutive tests, should be evaluated for progression; on the road, listen for clonks or knocks from the front end over speed humps, uneven road surfaces, and during full-lock low-speed manoeuvres, and check for uneven inner or outer tyre wear which can indicate altered geometry from worn bushes. The anti-roll bar linkage ball joint that previously failed was replaced or rectified prior to the most recent pass, but its failure mode warrants confirmation that the work was carried out professionally and that the adjoining components remain sound. The rear exhaust back box leak that caused the recent failure should be verified as properly repaired, as exhaust leaks near the rear can affect emissions readings, produce an audible hiss or ticking under load, and if left unresolved may permit corrosive gases to affect surrounding underbody components. Additionally, given the inner edge wear advisory on the front tyres, inspect the current tyres for camber-related wear patterns and consider a four-wheel alignment check, as Smart Forfour geometry is sensitive to worn suspension components. Beyond the items highlighted in the MOT history, age- and mileage-appropriate checks should form part of any inspection. Examine all tyres, including the spare if fitted, for sidewall perishing and cracking which occur regardless of tread depth, and verify that the manufacture date code shows rubber no older than approximately six years for safety. The 12V battery should be load-tested, as a standing vehicle frequently suffers from premature battery failure; ask for evidence of recent replacement. Inspect the brake discs on all four corners for lipping, scoring, or heavy corrosion, and verify that the calipers release freely without seizing, a common issue on low-use vehicles. Coolant, brake fluid, and gearbox oil should be checked for condition and service intervals, as these fluids degrade with calendar age even when mileage is low. Finally, request the full service history to confirm that time-based servicing such as cambelt replacement if applicable, coolant flushes, and brake fluid changes have been performed at the manufacturer-recommended intervals, as a low annual mileage does not extend these periodic replacement schedules.