2015 Mercedes-Benz E 3.0L Diesel · G14 AAP

Persistent mechanical sluggishness within the parking brake mechanism defines the recent history of this vehicle, with the issue appearing as a recurring advisory in three consecutive annual inspections, including the most recent pass on 01 October 2026. While the vehicle has successfully cleared its annual assessments following a 2024 failure involving tyre sidewall damage, the consistent flagging of the foot-operated parking brake indicates a mechanical resistance or lubrication failure within the release cable or pedal assembly. This pattern suggests a static component issue that has remained unaddressed despite repeated technical observations. Accumulating 63,223 miles over an eleven-year lifespan results in an average of approximately 5,748 miles per annum, a figure significantly below the national average for a vehicle of this class. While this lower usage profile often implies reduced wear on the drivetrain and chassis components, it necessitates a careful inspection of rubberised elements and seals which can deteriorate through age rather than friction. The absence of significant gaps in the MOT history confirms the vehicle has remained in consistent, albeit light, use throughout its life, avoiding the risks associated with prolonged periods of inactivity or storage. Prospective buyers should prioritise a functional assessment of the parking brake during a test drive, specifically observing whether the pedal returns to the neutral position promptly without manual assistance. Any hesitation or audible binding when engaging or releasing the mechanism could indicate a seized cable or a failing return spring, both of which require investigation to ensure the park brake does not drag while the vehicle is in motion. Given the 2024 failure involving sidewall damage and previous advisories regarding tyre wear and perishing, inspect the inner and outer sidewalls of all four tyres for signs of cracking or uneven tread wear, which may point to underlying suspension alignment issues. Beyond the braking system, the history of tyre-related advisories warrants a close examination of the suspension bushes and steering linkages. Listen intently for metallic knocks or clunks when traversing uneven road surfaces or speed bumps, as these sounds often indicate worn control arm bushings or ball joints that may not have reached the threshold for an MOT failure but still affect handling precision. Ensure the steering remains neutral on a flat road surface without pulling to either side, and check that the brake pedal feel is firm and consistent, as any sponginess could indicate trapped air or degradation in the hydraulic system that has not been captured by the standard testing procedure.