2016 Fiat 500 1.2L Petrol · SA66 FNH

A suspension and braking weakness has emerged as the defining mechanical theme for this 2016 FIAT 500, with two separate failures in the past three testing cycles both centred on undercarriage components. The most recent test on 3 September 2026 returned a pass with no defects recorded, which is a positive result, but it sits against a backdrop of recurring advisories on the nearside front suspension arm ball joint across consecutive years, culminating in a major failure on 4 September 2025. Braking performance has also been a concern, with a failed test on 18 August 2023 citing service brake efficiency and parking brake efficiency below requirements, alongside front brake disc and pad wear advisories that have reappeared at multiple tests since 2022. Coolant leaks were flagged as advisories in both the 2025 failure and the following pass, suggesting an unresolved sealing issue within the cooling system. Recorded mileage stands at 107,534 miles across roughly ten years, equating to an annual accumulation of around 10,750 miles, which sits squarely within typical usage expectations for a car of this age. There are no significant gaps in the testing history, with tests recorded annually from 2021 onwards, and mileage progression between tests appears consistent rather than exhibiting sharp jumps that might suggest long periods of standing followed by sudden use. While the mileage is unremarkable, the volume of front-end wear advisories is more consistent with what one would expect from a vehicle whose suspension and braking components have absorbed above-average cyclic stress, particularly given the urban stop-start duty cycle typical of a small city car like this. The chronic nature of the suspension arm ball joint advisories is the standout mechanical signal and warrants close physical inspection before purchase. A prospective buyer should prioritise a thorough underbody examination focused on the front suspension, particularly the nearside arm ball joint and the rear bush of the offside front arm, both of which have been flagged in recent tests. On a test drive, listen for clonking or knocking noises from the front end when traversing speed humps, uneven road surfaces, or during full lock manoeuvres, as these are classic symptoms of a worn lower arm joint. Heavier wear may also produce vague steering response or a vague self-centring action. With the brake disc and pad advisories dating back to 2022, a physical inspection of the front discs for lipping, hot spots, and surface pitting is essential, and any vibration or judder through the brake pedal under firm application should be noted, as it indicates disc runout beyond serviceable limits. The parking brake mechanism, given its 2023 efficiency failure and the 2025 advisory on the nearside rear cable damage, should be tested on an incline to confirm it holds without excessive travel. The cooling system requires prompt attention as well, since two coolant leak advisories were raised in 2025 without a clear resolution confirmed in subsequent records. On inspection, look for staining or crystallised deposits around the water pump, thermostat housing, and radiator matrix, and check the coolant reservoir for level and condition before any test drive. The 2023 advisories on nearside rear and offside front tyres wearing close to the legal limit on their inside edges also merit a four-wheel alignment check, as excessive inner-edge wear on a 500 frequently points to worn suspension bushes allowing geometry drift. Finally, the nearside front seatbelt webbing fraying noted in 2023 should be physically checked to ensure no further deterioration has occurred, as a frayed belt webbing can compromise its load-bearing integrity and represents a significant safety concern if left unresolved.