2018 Audi Q3 1.4L Petrol · SS18 DJS

The vehicle most recently passed its DVSA MOT test on 24 March 2026 with no defects or advisories recorded, and this clean result is consistent with the test history overall, which shows consecutive passes in 2021, 2022, 2023, 2025, and 2026. The single failure, recorded on 22 March 2024, was a Major defect concerning exhaust emissions exceeding the manufacturer's specified limit. The fact that the car passed on 04 April 2024 just thirteen days later, and has subsequently passed three further tests, suggests that the emissions issue was likely addressed through routine service work such as a catalyst inspection, oxygen sensor replacement, or simply a clean burn after sustained running. There is no pattern of recurring or progressive defects, no advisories regarding brake condition, suspension components, tyres, corrosion, or structural integrity, and the maintenance trend can reasonably be assessed as stable. With recorded mileage of 25,898 miles across an eight-year lifespan, this Q3 has covered an average of roughly 3,237 miles per year, which is considerably below the typical annual mileage for a vehicle of this type and size. Such low usage has mechanical implications that extend beyond what the MOT history alone reveals. Extended periods of standing can lead to moisture accumulation within the engine oil, brake fluid degradation through hygroscopic absorption, brake disc corrosion due to infrequent bedding of the pads, and potential drying or perishing of rubber components throughout the chassis and drivetrain. While low mileage reduces wear on friction surfaces, it can paradoxically accelerate the deterioration of seals, hoses, and protective finishes simply through age rather than use. A prospective buyer should therefore undertake a number of practical physical inspections beyond the MOT certificate. Tyres should be examined for sidewall cracking or perishing, as rubber compounds deteriorate with age regardless of tread depth, and the date code on the sidewall should confirm manufacture within the last six years. The 12V battery should be load-tested, as batteries that have spent long periods partially discharged on vehicles used infrequently frequently show reduced capacity even if the vehicle still starts reliably. Brake discs should be visually checked for surface corrosion, and on a test drive any shuddering under braking, pulling to one side, or binding caliper behaviour after prolonged standing should be noted. Fluid condition is particularly relevant; engine oil, brake fluid, coolant, and the dual-clutch or automatic transmission fluid if applicable should all be inspected for age-related degradation, and the service book should be examined to confirm that annual time-based servicing has been carried out irrespective of the low odometer readings. Finally, items such as the timing belt or chain service interval, where applicable to the engine variant, should be verified against calendar age rather than mileage, as many intervals are now time-based. The exhaust system, given the earlier emissions failure, merits close inspection for corrosion at joints and mounting rubbers, which on a 2018 vehicle could now be approaching the point of natural deterioration. A pre-purchase diagnostic scan would also be prudent to confirm that any previously rectified emissions faults have not returned and that no underlying fault codes relating to lambda sensors, the catalytic engine, or the diesel particulate filter if fitted are stored. Overall, the MOT profile is reassuringly clean, but the low usage pattern demands that age-related inspections take precedence over mileage-based assumptions about remaining component life.