2021 Tesla Model 3 Long Range AWD Electric · AF21 DYA

The most recent MOT test on 2026-01-08 resulted in a failure, with two critical defects classified as "Dangerous" related to the near-side and off-side rear tyres, each having a tread depth below the legal minimum of 1.6 millimetres. This marks a significant deviation from the previous three MOTs, which were all passed without any recorded defects. The failure suggests either recent, unaddressed wear or a persistent issue with tyre management, potentially indicating poor maintenance practices or underlying suspension or alignment problems that exacerbate tyre wear. While the vehicle’s overall maintenance history prior to this failure appears stable, the sudden failure highlights a critical flaw that must be rectified immediately to ensure roadworthiness and compliance with legal standards. The recorded mileage of 50,141 miles for a 2021 Model 3 Long Range AWD represents a moderate annual usage rate of approximately 10,028 miles per year, which is within the expected range for its age and class. This figure does not suggest excessive wear beyond typical expectations, though prolonged periods of inactivity could have contributed to minor standing-related issues such as brake system corrosion or fluid degradation. However, the absence of higher mileage accumulation—such as 15,000+ miles annually—indicates that the vehicle has likely been driven in a more controlled manner, reducing the likelihood of severe wear on high-mileage components like the drivetrain or exhaust system. Nonetheless, the recent tyre failure underscores the importance of addressing wear patterns promptly, as tyres are particularly susceptible to uneven wear when suspension or alignment issues are present. Given the recent MOT failure and the critical nature of the tyre defects, the prospective buyer should prioritise a thorough inspection of the rear suspension and alignment system. The tyre wear suggests either excessive camber or toe-in issues, which could be exacerbated by worn suspension bushes, coil springs, or binding calipers. On a test drive, listen for unusual clunking noises from the rear suspension, particularly when transitioning between rough and smooth surfaces, and check for uneven tyre wear patterns that may indicate misalignment. Additionally, inspect the rear wheels for signs of excessive heat damage or cracking, which could signal brake issues or overheating. If the tyre defects are confirmed, the buyer should consider replacing the tyres immediately, as further reduction in tread depth could lead to hydroplaning risks and legal non-compliance. Beyond tyres, a full fluid check—including brake fluid, differential fluid, and coolant—is advisable, as standing periods can accelerate degradation in these systems. For a vehicle of this age and mileage, the buyer should also conduct a comprehensive physical inspection focusing on the following areas: the battery and electrical system, given the Model 3’s reliance on advanced electronics; the brake system for signs of corrosion or binding, particularly on components that may have been exposed to moisture; and the structural integrity of the chassis and body panels for any signs of rust or damage that could compromise safety. Given the vehicle’s age, check the tyre sidewalls for signs of perishing or cracking, which can compromise their integrity under high stress. A visual inspection of the exhaust system for leaks or corrosion is also prudent, as emissions-related advisories or failures could recur. Finally, if the vehicle has not been serviced recently, verify the presence of service book stamps for the recommended 12-month intervals, particularly for fluid top-ups, brake inspections, and suspension checks. While the MOT history prior to the recent failure was clean, the buyer should treat the tyre failure as a red flag and address it promptly to ensure the vehicle remains roadworthy and safe.