2020 Mercedes-Benz GLE 3.0L Hybrid electric · HS69 FLV

The most recent MOT test conducted on the 2026-08-06 resulted in a failure, with the vehicle being deemed unsafe for road use due to a critical tyre defect on the near-side front tyre—a bulge indicative of structural separation or failure. This failure follows a pattern of recurring issues, as evidenced by the two previous MOTs on 2025-01-16 and 2026-02-27, both of which also recorded the same dangerous tyre defect alongside an engine malfunction advisory. While the intervening MOTs on 2025-01-21 and 2026-08-06 passed without defects, the presence of two consecutive failures with identical tyre and engine-related problems suggests a persistent underlying issue that has not been resolved. The failure rate and severity of defects indicate a maintenance trend that requires urgent attention, with the tyre failure being the most immediate and critical concern. The recorded mileage of 84,934 miles for a vehicle aged six years represents a high annual usage rate of approximately 14,156 miles per annum, which is notably elevated for its class and age. Such high mileage typically accelerates wear on consumables like brake pads, suspension components, and drivetrain elements, as well as fluids such as brake fluid and engine oil, which degrade more rapidly under heavy use. The absence of significant mileage gaps suggests consistent, possibly aggressive driving conditions, which may exacerbate wear on critical systems like the front tyre, where the failure has been documented. Additionally, prolonged periods of inactivity could lead to standing corrosion in the brake system, particularly on the near-side front brake components, as moisture and road salt can accelerate rusting of brake discs and calipers. The tyre failure alone underscores the need for a thorough inspection of the entire tyre and wheel assembly, including checking for lateral cracks or delamination that may precede further structural compromise. Given the critical tyre failure and recurring engine advisories, the prospective buyer must prioritise an immediate, in-depth inspection of the front tyre and wheel assembly. The bulge observed in the near-side front tyre is a clear sign of internal separation, which could lead to sudden failure and loss of control. During a test drive, listen for unusual noises such as a sudden hissing sound from the tyre, which may indicate air loss, or a sharp vibration at speed, which could signal a blowout. Inspect the tyre for any visible cracks, bulges, or uneven wear patterns, and measure the tread depth to ensure it meets the legal minimum of 1.6mm. If the tyre is beyond its safe serviceable life, replacement is essential, ideally with a new tyre fitted by a qualified professional to ensure proper installation and alignment. The engine MIL advisory suggests a persistent electrical or mechanical fault that requires diagnosis, with symptoms to watch for including rough idling, misfires, or reduced power output. Listen for knocking or ticking noises from the engine bay, and check for excessive smoke from the exhaust, which may indicate oil consumption or coolant leaks. Addressing these issues promptly will mitigate further damage and ensure the vehicle remains safe for use. For the buyer, given the high mileage and recurring defects, a comprehensive mechanical inspection should be conducted by a qualified independent mechanic. Focus on the suspension system, particularly the front suspension bushes and coil springs, which may show signs of excessive wear or failure due to the high annual mileage. Inspect the front wheels for binding calipers, which can occur from standing corrosion or brake fluid contamination, leading to uneven braking or a shuddering feel when braking. Check the brake discs for corrosion, warping, or grooving, and ensure the brake pads have sufficient material remaining. Additionally, verify the condition of the engine oil, coolant, and transmission fluid, as high mileage increases the risk of fluid degradation from heat and usage. If the vehicle has been stored for extended periods, check the 12V battery for corrosion on terminals and ensure it holds a charge when tested. Finally, inspect the exhaust system for leaks or structural damage, as emissions-related failures could recur if underlying issues remain unresolved. Given the tyre failure, consider replacing the tyre and wheel assembly as a precaution, and ensure all fluid levels and components are serviced according to the manufacturer’s recommendations.