2012 Mercedes-Benz E 2.1L Diesel · PY12 FNH

Corrosion on the brake pipe system and the gradual wear of suspension arm bushes dominate this car’s MOT history, with the most recent test on 19 December 2025 recording a pass but flagging tyre wear close to the legal limit and the presence of under‑tray and sill‑cover fittings. The 1 December 2025 failure highlighted front and rear brake pipes excessively corroded on both sides and a rough off‑side front wheel bearing, while earlier years show recurring advisories for brake‑pipe condition and suspension arm pin wear. Since the 2024 pass the brake‑pipe advisory persisted, indicating the issue has not progressed to a failure but remains a point of concern. At 122,176 miles over 14 years the vehicle averages roughly 8,700 miles per annum, a mileage rate that sits comfortably within typical usage for a Mercedes‑Benz E‑Class of this age. The MOT record shows annual testing with no significant gaps, suggesting the odometer readings are consistent with the test dates. This moderate annual accumulation means consumables such as brakes, tyres and suspension components will have experienced normal wear, but the recorded corrosion and suspension advisories imply that the mileage has contributed to accelerated degradation of those specific parts. When inspecting the car, pay particular attention to the front and rear brake lines: look for any signs of external rust, fluid leakage at joints, or a spongy pedal feel that could indicate internal corrosion. The off‑side front wheel bearing that was noted as rough should be re‑checked by rotating the wheel by hand and listening for grinding or excessive play; any abnormal noise or feel may require bearing replacement. The suspension arm pins and bushes flagged in 2019 and again in 2024 are worn but not yet excessive, so a test drive over uneven surfaces should reveal any clunking, knocking or steering wander that would point to imminent bush failure. The under‑tray and sill‑cover fittings noted in the latest advisory suggest localized rust that, while not currently a safety defect, could progress if water ingress continues. Tyre tread depth should be measured to confirm the advisory’s implication of edge wear, and the tyres should be replaced if the remaining tread is below the legal minimum. Budget for replacement of the corroded brake pipes and likely renewal of the front wheel bearing and suspension arm bushes, as these items have already attracted major failures or repeated advisories and are critical to maintaining roadworthiness.