2014 Mercedes-Benz E 2.1L Diesel · WA64 VRN

Rear sub-frame corrosion has emerged as a significant structural concern, flagged in the November 2025 test as corroded but not yet seriously weakened, requiring immediate independent inspection to rule out imminent failure or mounting point degradation. This chassis issue coincides with a persistent pattern of brake disc wear recorded across three consecutive inspections, with all four discs noted as worn in both 2024 and 2025, and rear discs pitted and scored in 2023. While the vehicle passed its latest examination on 13 November 2025, the accumulation of advisories regarding suspension mounting points and braking components indicates a trajectory of deteriorating mechanical integrity that demands rigorous scrutiny before purchase. The recorded mileage of 114,788 miles represents a consistent accumulation rate of approximately 9,500 miles per annum, aligning with average usage expectations for a vehicle of this age. Testing intervals have remained regular, with annual examinations recorded from 2022 through 2025, showing no extended periods of inactivity that would suggest storage-related degradation. This steady usage profile correlates with the observed wear patterns, particularly the progressive deterioration of brake discs and the development of sub-frame corrosion, which are consistent with the mechanical stresses imposed by regular driving over a twelve-year service life. Inspection must prioritize the rear sub-frame, where corrosion was identified in the most recent test. A qualified technician should assess the mounting points and surrounding chassis structure for any signs of metal fatigue, cracking, or excessive movement when the suspension is compressed. On the test drive, listen for clunking noises from the rear over broken surfaces or during acceleration and braking, which may indicate compromised sub-frame rigidity. Additionally, verify the condition of the rear suspension arms and bushes, as vibration from a weakened sub-frame can accelerate wear on these components. Given the history of front oil leaks noted in 2023 and 2024, examine the engine bay for fresh seepage around the sump, valve cover, or oil filter housing, and check the oil level and condition for signs of external contamination or consumption issues. The braking system requires immediate attention due to the recurrent advisories regarding disc wear across all wheels. Measure the thickness of all four brake discs to ensure they remain within manufacturer specifications, as discs worn close to the limit can lead to brake judder, reduced stopping efficiency, and potential warping under load. During the test drive, apply the brakes firmly from moderate speeds to detect any pedal pulsation or steering wheel vibration, which often accompanies uneven disc wear or scoring. The nearside front inner tyre was recorded as worn close to the legal limit and worn on the edge in November 2025; inspect this tyre and its counterpart for irregular wear patterns that may suggest alignment faults or suspension geometry issues, and ensure the tread depth is well above the statutory minimum. Finally, review the tyre condition for any remaining cuts or sidewall damage, as previous tests flagged cuts on the offside front and nearside rear outer tyres in 2023.