2016 Suzuki Swift 1.2L Petrol · CU66 UNB

The Suzuki Swift presents a mixed maintenance picture, with a clear worsening trend in structural corrosion at the most recent test. In the July 2025 MOT at 38,989 miles, the tester flagged corrosion across all four coil springs and the rear axle, with sill covers preventing a full underbody inspection. This is a notable deterioration from the clean bill of health recorded at 24,541 miles in August 2024. The coil spring corrosion is particularly concerning, as heavily corroded springs risk sudden fracture under load, compromising suspension geometry and structural integrity. The record shows a resolving trend for minor electrical items, with a rear fog lamp failure in February 2022 rectified the same day, but the emerging rust issues now dominate the vehicle's mechanical risk profile. The mileage pattern is anomalous and warrants scrutiny. Between the February 2023 test at 23,290 miles and the August 2024 test at 24,541 miles, the vehicle covered just 1,251 miles over approximately 18 months, suggesting prolonged stationary periods. Yet by July 2025, the odometer read 38,989 miles, a jump of 14,448 miles in under 12 months. This irregular accumulation pattern raises questions about the vehicle's use history, whether it was laid up, used as a short-trip local runabout, or subjected to a sudden change in ownership or usage. Long periods of inactivity can accelerate corrosion in brake lines, seals, and exposed chassis components due to lack of heat cycling and protective lubricant distribution. A buyer should prioritise a thorough underbody inspection, paying close attention to the condition of all coil springs, the rear axle, and the structural sills where covers were fitted. The sill covers themselves are a red flag, as they can trap moisture and conceal advanced corrosion behind intact exterior panels. Request their removal before purchase. The February 2023 advisories for worn, pitted front brake discs and corroded rear brake hose ferrules indicate the braking system has had corrosion issues; check whether these components have been replaced or remain original, as corroded ferrules can lead to hose failure under hydraulic pressure. Tyre condition and suspension bushes should also be examined, given the low annual mileage and potential for perishing from age rather than wear. The coil spring corrosion flagged in 2025 is the most significant finding on record. Left unaddressed, it poses a genuine structural risk. Have a qualified technician measure spring free height and inspect for visible pitting or cracking before committing to purchase.