2017 Mercedes-Benz V 2.1L Diesel · SP17 OJD

The 2017 Mercedes-Benz V presents a pattern of intermittent mechanical stress rather than continuous degradation, with two distinct failure events recorded over the past two years. A dangerous condition involving rear brake pads below the safe threshold was confirmed on 2021-11-01, and a subsequent advisory on 2026-04-14 noted rear tyres worn close to legal limits or appearing worn on the edge. While the most recent MOT on 2026-04-14 cleared the vehicle, the lingering tyre advisory remains active and indicates that the brake failure did not fully resolve prior concerns, leaving the rear tyres still requiring urgent replacement to achieve both safety compliance and proper handling. This sequence of events suggests that the vehicle's mechanical health has been compromised by two separate incidents rather than a steady decline, which means the current passing status does not guarantee a flawless operating condition. The recorded mileage of 161,613 miles accumulated across nine years translates to an average annual increase of approximately 17,957 miles, a figure that stands out as unusually high for a vehicle of this model year and age. Such rapid mileage accumulation typically reflects either frequent daily driving, occasional commercial or towing use, or prolonged periods where the vehicle remained under high demand despite the stated low annual usage. From a mechanical perspective, this sustained heavy workload accelerates wear across all dynamic systems, meaning suspension bushings, coil springs, and shock absorbers experience accelerated fatigue; brake pads and rotors see accelerated abrasion; and the drivetrain components endure greater thermal cycling and lubricant breakdown. The combination of advanced age and elevated mileage therefore creates a compounded risk profile that cannot be assessed solely by looking at the individual MOT pass marks. Focusing on the specific components flagged in the advising history requires targeted scrutiny during the test drive. The rear brake system, having failed previously due to insufficient pad thickness, demands verification that the new pads are genuinely replaced and properly seated, and that the calipers are free from sticking or rubbing against the rotor surface. Listen for any grinding or squealing noises when applying the brakes firmly, especially at low and moderate speeds, and check whether the brake pedal maintains a consistently firm feel throughout the travel distance from the floor to the top of the pedal lever. For the rear tyres, examine the tread depth and edge condition closely; a worn-on-edge appearance often correlates with improper alignment or uneven wear that could develop rapidly given the high mileage exposure. Additionally, given the substantial total mileage, inspect the subframe, wheel arches, and lower control arm assemblies for signs of rust penetration or structural flexing, as these areas are commonly affected in vehicles running at such extended service intervals. Based on the documented failures, the buyer should treat the rear brake system as a priority item regardless of the current passing result, as the 2021 failure indicates a root cause that may not have been adequately resolved. Request proof of recent brake pad replacement with measuring tools to confirm the minimum thickness requirement is met, and consider having the calipers inspected for internal wear or seal leakage that could cause future failure. Similarly, the rear tyres require immediate replacement and a full alignment check, since worn edges compromise lateral grip and can lead to handling instability—particularly problematic given the vehicle's high annual mileage which amplifies tyre wear. Before finalising the purchase, arrange a detailed post-purchase inspection that includes a visual subframe survey, brake fluid flush recommendation, and a thorough brake performance test to ensure both critical systems are functioning within safe parameters.