2016 Audi Q3 2.0L Diesel · P66 PAD

The most recent MOT test on 2026-04-01 resulted in a failure, with multiple major defects affecting the vehicle’s lighting systems—specifically, non-functional rear position lamps on both near and offside sides and non-operational rear stop lamps on both sides. This outcome contrasts sharply with the clean passes from the previous two years, indicating a deterioration in the electrical and lighting components, which could stem from wiring corrosion, faulty bulbs, or failing relays. While the 2025 MOT was free of issues, the failure in 2026 suggests either a sudden failure mode or a gradual degradation that may have been masked by intermittent functionality. The presence of advisories on tyre wear and brake component condition further complicates the assessment, as these recurring concerns point to ongoing mechanical stress that requires immediate attention to prevent further safety risks. The vehicle’s recorded mileage of 94,938 miles at the time of this assessment represents a moderate annual usage rate of approximately 9,494 miles per year, which is consistent with typical driving patterns for a ten-year-old car. Such mileage, while not exceptionally high, does imply consistent use over a decade, which accelerates wear on consumables like brake pads, tyres, and suspension components. The lack of significant mileage gaps suggests the vehicle has been in regular service, potentially leading to more rapid degradation of components such as seals, gaskets, and electrical connections. However, the absence of extreme mileage accumulation—such as 20,000+ miles annually—reduces the likelihood of severe drivetrain or engine wear, but it does not eliminate the need for thorough inspection of high-mileage critical areas like the exhaust system, transmission fluid, and suspension bushings. For a prospective buyer, the most critical immediate actions should focus on addressing the failed lighting systems and the recurring tyre and brake advisories. The non-functional rear lamps and stop lamps pose a direct safety hazard, as they are essential for visibility during low-light or adverse conditions. A thorough inspection of the wiring harnesses, fuses, and relay modules should be conducted, with particular attention to signs of corrosion or physical damage along the electrical pathways. Testing each lamp circuit with a multimeter and visually confirming the integrity of wiring insulation will help identify the root cause—whether it is a failing bulb, a shorted wire, or a defective connector. If the issue persists after bulb replacement, further diagnostic work may be required to pinpoint the exact failure point. In addition to the electrical concerns, the tyre and brake advisories demand immediate attention. The nearside rear tyre’s edge wear suggests directional or alignment issues, which could lead to uneven tyre degradation or reduced handling stability. A professional alignment check is recommended to ensure the vehicle’s wheels are correctly set for optimal tyre longevity and road safety. Regarding the brake components, the thinness of the offside front and rear pads, along with the pitted or scored discs, indicates significant wear that may require replacement soon to prevent overheating, reduced braking performance, or even failure under heavy loads. During a test drive, listen for signs of brake pulsation or shudder, which could indicate warped discs or binding calipers, and check for uneven brake pad wear patterns that may signal misalignment or hydraulic issues. Finally, while the emissions advisory from 2022 suggests the vehicle is compliant with current standards, a fresh engine oil and filter change, along with a check of the catalytic converter and exhaust system for blockages or leaks, should be performed to maintain optimal performance and avoid potential future failures. For the buyer, a comprehensive pre-purchase inspection by a qualified mechanic is strongly advised to verify the findings from the MOT history and address any hidden issues that may not have been flagged.