2021 Porsche Taycan 4X2 Electric · OY09 TER

The most recent MOT test on the Porsche Taycan occurred on 2026-02-26, where the vehicle was declared failed due to dangerous defects related to the near-side rear tyre’s tread depth falling below the legal minimum of 1.6mm, a critical road safety requirement. This marks a significant deviation from the previous MOT history, which had consistently passed without any defects or advisories in the preceding three years. The failure indicates a deliberate or accidental reduction in tyre tread depth, which could stem from prolonged periods of low-speed or stationary use, improper storage conditions, or deliberate underinflation. The advisory regarding the offside rear tyre’s uneven wear pattern—particularly the edge wear—suggests either directional misalignment, incorrect tyre rotation, or excessive lateral forces acting on the tyre, which may have accelerated wear beyond the legal limit. This pattern of defects suggests a maintenance oversight or operational issue that warrants immediate attention, as both conditions are safety-critical and could lead to hydroplaning or reduced traction in adverse conditions. The vehicle’s recorded mileage of 31,045 miles at the time of the latest MOT is consistent with its age, approximately 5 years old, translating to around 6,209 miles per year—a rate that aligns with typical usage patterns for a performance-oriented electric vehicle in the UK. While lower mileage might imply lighter or more selective use, the absence of significant mileage gaps in the MOT history suggests the vehicle has been driven regularly, though not excessively. However, the combination of the recent tyre failures and the wear patterns observed may indicate that the vehicle has either been subjected to uneven loading conditions, such as frequent acceleration and braking in one direction, or has experienced prolonged periods of static use where tyres can degrade faster due to lack of movement. This could also explain why the near-side rear tyre failed the MOT, as it may have been more exposed to static or directional stress compared to the offside tyre. The implications for mechanical wear are notable, particularly in the suspension and steering systems, where uneven tyre wear can signal binding or misalignment issues. Given the recent MOT failures, the prospective buyer must prioritise a thorough inspection of the tyres, suspension, and steering components to address the immediate safety concerns. The near-side rear tyre’s tread depth below 1.6mm is a dangerous failure, and the vehicle should not be driven until this is rectified, ideally by replacing the tyre with a new or re-grooved one to restore legal tread depth. The offside rear tyre’s edge wear suggests checking for tyre rotation history, alignment settings, and any signs of lateral forces acting on the tyre, such as excessive body roll or suspension binding. On a test drive, listen for unusual suspension clunks or rattles, particularly around the rear wheels, which could indicate worn suspension bushes or coil spring degradation. Additionally, inspect the tyre pressure and alignment at a professional service centre to confirm the wear patterns and correct any misalignment. Beyond the tyres, the vehicle’s electric drivetrain and high-voltage systems should be monitored for any signs of overheating or unusual noises, as the Taycan’s electric powertrain can generate distinct operational sounds under load. For the buyer’s immediate inspection, focus on the following areas to ensure the vehicle’s roadworthiness and long-term reliability: verify the tyre sidewall condition for signs of perishing or cracking, which can occur even with low mileage due to the Taycan’s advanced materials and exposure to UV degradation over time. Check the 12-volt battery and associated electrical systems for corrosion on terminals or signs of reduced performance, as prolonged static use can accelerate battery degradation. Inspect the brake system for signs of corrosion on discs or calipers, particularly if the vehicle has been stationary for extended periods, which can lead to binding or reduced braking efficiency. Examine the fluid levels and condition of the brake fluid, coolant, and power steering fluid, as these fluids degrade over time, even without significant mileage. Given the Taycan’s electric powertrain, ensure the battery management system is functioning correctly by checking for any warning lights or unusual behaviour during a test drive. Finally, verify that the service book or maintenance records are up to date, particularly for the high-voltage system and any scheduled fluid replacements, as the Taycan’s electric architecture requires precise maintenance intervals. If the vehicle has been used primarily for short trips or stationary periods, consider a more comprehensive inspection of the suspension and steering components to identify any hidden wear or misalignment issues.