2015 Mercedes-Benz E 2.1L Diesel · W9 YOO

The 2015 Mercedes-Benz E presents a generally reliable roadworthiness profile punctuated by a single significant failure event in October 2023, which was subsequently resolved before the next two MOT tests in early 2024 and late 2025 both returned as passed. The 2023 failure was particularly concerning as it combined dangerous conditions—insufficient tyre tread on the offside rear exceeding safe limits and major structural damage to front and nearside rear tyres—with a secondary electrical issue where the offside rear position indicator lamp was partially non-functional. Despite these setbacks, the vehicle maintained compliance through subsequent testing, indicating that the underlying problems were addressed, though buyers should treat the historical tyre damage and electronic warning as residual risks that may require verification before purchase. At 11 years old with approximately 111,000 miles recorded, the vehicle accumulates roughly 10,086 miles annually, which aligns reasonably well with its age and provides moderate expectations for wear on engine components, suspension bushings, and braking system consumables. The seven-month interval between the 2023 failed test and the 2024 passing test represents a normal service gap, but the absence of any further deterioration between 2024 and 2025 suggests the repairs made after the 2023 failure did not trigger accelerated degradation. The consistent annualisation of mileage indicates the car has been driven regularly rather than stored, meaning the majority of wear will be distributed across the drivetrain and suspension rather than concentrated in static corrosion areas, though the specific tyre damage noted earlier warrants attention regardless of overall mileage trends. The offside rear tyre with insufficient tread depth remains a primary concern for safety, as a tread measurement below 1.6mm compromises traction and legal compliance, while the cut tyres on the front and nearside rear indicate compromised sidewall integrity that could lead to blowout under load or harsh handling. During a test drive, the buyer should pay close attention to how the vehicle responds when approaching corners at moderate speed, listening for any abnormal noises from the damaged front tyre and checking whether the nearside rear tyres exhibit uneven wear patterns or vibration. The partial failure of the offside rear position lamp should also be verified—while the current test shows it is functional, a persistent fault would affect driver awareness of lane position, so confirming full operation is essential before considering the purchase complete. Beyond the tyre and lighting issues, the 2022 advisory regarding the rear outer child seat fitting limiting adult belt inspection should be confirmed as resolved, as this affects occupant protection standards. For a new owner, the immediate action items are to inspect all three affected tyres physically to confirm they meet minimum tread and structural specifications, perform a thorough visual and tactile examination of the front and nearside rear tyres for any remaining cuts or delamination, and test the offside rear position lamp for full functionality including all indicator segments. If these checks pass, the vehicle represents a sound investment given its clean recent history and reasonable mileage progression, though the original failure events should be documented in the buyer's own records as potential future points of review.