2018 SEAT Arona 1.0L Petrol · G9 TSM

The 2025 MOT test result was a Pass, albeit recorded only the day after a Fail on the same date for an illuminated Supplementary Restraint System warning lamp, indicating a fault within the airbag or seatbelt pretensioner circuit. That failure was remedied before the re-test, and aside from that single major defect, the recent MOT history shows a stable and largely well-maintained trend. The 2024 pass carried a small number of advisories centred on the front brake discs and tyres, while the 2023 and 2022 tests passed cleanly with no recorded defects. The presence of an SRS warning lamp failure, even though resolved, should prompt careful verification that the repair was carried out properly, that any airbag or crash sensor work was completed by a competent technician, and that the lamp does not reappear on cold starts or after the vehicle has been left standing. Similarly, the persistent advisory regarding a child seat being fitted and obstructing adult belt inspection suggests the vehicle has been used regularly for carrying young children, which is relevant context but not a mechanical concern in itself. At roughly eight years of age with 41,956 miles on the odometer, this SEAT Arona has covered approximately 5,244 miles annually, which is well below average for its class and age. Such low annual mileage suggests either predominantly short urban journeys or significant periods of inactivity, both of which carry distinct mechanical implications. Short trips prevent the engine, turbocharger (if fitted), exhaust system, and catalytic converter from reaching full operating temperature, allowing moisture, fuel, and oil residues to accumulate and potentially degrading engine oil faster than its service interval would normally assume. Extended periods of standing, conversely, encourage brake disc corrosion and caliper seizure, underbody and subframe corrosion, deterioration of rubber seals and bushes through lack of dynamic load cycling, and 12V battery failure due to parasitic drain and insufficient charging. Given the advisory history, particular attention on a pre-purchase inspection should be given to the front braking system, as the 2025 test recorded the front brake pads as wearing thin and the 2024 test noted the front brake disc as pitted or scored on its inner face. Pitting and lipping of the disc surface is consistent with light use, infrequent braking, or standing periods, and if uncorrected can lead to brake shudder, vibration through the pedal under heavy braking, and accelerated pad wear. On a test drive, listen for any grinding or scraping from the front corners, and verify the vehicle tracks straight under firm braking without pulling to one side. Inspect the front discs directly for a pronounced outer lip and visible corrosion tracks, and check that the caliper slides move freely without binding. The tyres also warrant close scrutiny, as the 2024 advisories flagged perishing and cracking on three of the four tyres despite one being close to the legal tread depth. Tyres of this age are prone to sidewall perishing even when tread remains adequate, and a thorough visual inspection of all four sidewalls for hairline cracks is essential, with replacement strongly recommended as an age-related service item. Beyond the advisory history, a vehicle of this age and low mileage requires attention to several calendar-based service items that are independent of odometer readings. The 12V battery should be load tested, as eight-year-old original equipment units frequently fail without warning, particularly after periods of standing. Verify the timing belt or cam belt replacement interval, as the SEAT Arona's 1.0 TSI or 1.6 petrol engines typically require a belt change in this age range, and confirming whether this work has been stamped in the service history is critical. Engine coolant, brake fluid, and gearbox or transmission fluid all degrade by time rather than mileage and should be assessed for their last renewal dates. Underneath the vehicle, inspect for any signs of underbody corrosion, particularly around suspension mounting points, subframe, and brake and fuel lines, paying close attention to the wheel arches and sills. Finally, with the recent SRS warning lamp failure, confirm that all dashboard warning lamps extinguish promptly during the bulb check at ignition, and consider a diagnostic scan to ensure no stored fault codes remain relating to the airbag or restraint system. A full service history with verifiable stamps, ideally from a SEAT main dealer or recognised independent specialist, would substantially strengthen confidence in this otherwise tidy low-mileage example.