2010 Mercedes-Benz S-Class 3.7L Diesel · LH10 AAF

A clear pattern of escalating front suspension wear, brake line corrosion, and emissions-related defects dominates this S-Class record, with three of the last four tests producing failures. The 2025-08-28 pass is welcome news, but it sits immediately adjacent to the 2025-08-27 dangerous failure for both front tyres being below the 1.6mm legal tread limit and a major failure for excessive nearside front wheel bearing play, demonstrating that the car passed only once fresh tyres and likely a new bearing were fitted. Earlier tests are more concerning: in 2024-09-02 a major failure was recorded for excessively corroded front-to-rear brake pipes, an emissions overlimit reading, and an excessively worn nearside front lower suspension arm ball joint on the shocker, while the 2023-08-21 failure cited both front lower suspension arm ball joints as excessively worn, an engine management MIL malfunction, and the same brake pipe corrosion advisory. Taken together, the trajectory shows repeated front-end wear items and chassis-level corrosion that have repeatedly intervened between clean passes, rather than a steadily clean roadworthiness record. With sixteen years of age and 94,805 recorded miles, the car shows an average accumulation of roughly 5,925 miles per year, which is notably below typical figures for an S-Class that has likely covered a mix of motorway and executive use. Annual mileage between MOT tests is broadly consistent at around 7,000 to 9,000 miles during the more recent years, suggesting the vehicle has remained in regular use rather than being laid up for extended periods. There is no evidence in the record of multi-year testing gaps, which reduces the risk of seized components, dried seals, or stale fluids associated with long-standing vehicles, although the corrosion flagged on the brake pipework suggests age and exposure rather than storage have driven that deterioration. The recorded mileage appears plausible and free of the wide jumps that sometimes indicate clocking or registration swaps. From a buyer perspective, the items that should receive the closest physical inspection are exactly those flagged in the record. The nearside front wheel bearing that was failed as dangerous in August 2025 should be rechecked on a test drive: any humming that rises with speed, a roughness that changes through corners, or vibration through the steering wheel under load would suggest the replacement is already worn or incorrectly seated. The front suspension, particularly the lower arms, ball joints and shocker bottom joints, has been a recurring failure point since 2023, so any clonks over bumps, wandering at speed, uneven tyre wear across the front axle, or excessive free play when the wheels are rocked by hand should be treated as evidence that the renewal work has not held. The prop shaft flexible coupling, noted as slightly deteriorated in 2024 and 2023, can also produce a rotational shunt or vibration under drive and overrun, so a road test should include steady throttle, light throttle lift, and gentle parking manoeuvres. The brake system warrants particular scrutiny given the 2024 major failure for excessively corroded front-to-rear pipes. Even if the pipes were replaced at that test, an S-Class of this vintage commonly suffers further corrosion at pipe junctions, underbody clips, and the ABS modulator area, so a torch-based inspection of the full underbody length of the brake lines, the unions at the calipers, and the flexible hoses is worthwhile. The 2023 advisory noting brake pipes covered in grease suggests a previous owner may have masked corrosion, so any evidence of fresh underseal, fibrous tape, or thick coatings over pipework should be viewed with caution. The 2024 emissions failure and 2023 MIL inoperative reading point at the engine management side; a test drive should include a cold start, a check that the management light behaves correctly on ignition, and attention to any hesitation, misfire, or unusual smoke that might explain a further emissions overlimit reading. Finally, the most recent test having only just been passed means the advisories are absent from that record, but a physical inspection should still specifically check tyre condition on all four corners, front brake disc surface for the pitting previously noted, and rear prop shaft coupling for any further deterioration before purchase.