2011 Mercedes-Benz ML 3.0L Diesel · EK11 AEJ

A fifteen-year-old ML with 173,162 miles on the odometer has accumulated a notable pattern of corrosion-related brake and exhaust failures alongside chronic tyre wear advisories, suggesting a vehicle that has seen hard service over many winters. The most recent test on 24 August 2026 was ultimately recorded as a pass, but only after a same-day failed attempt that day, and the defects logged are revealing. The failure cited an inoperative engine MIL alongside non-functioning offside front position lamp and nearside rear lamps, while the pass retained advisories for the offside front inner tyre and a nearside rear registration plate lamp minor defect. Looking back, the trajectory has been decidedly mixed: three separate stop lamp failures have appeared across 2023 and 2026, and the 2023 test produced a cluster of brake pipe corrosion failures covering front-to-rear lines alongside an insecure exhaust with broken clamps. The January 2024 and 2025 tests then surfaced a deteriorated prop shaft bearing housing, further oil misting from the offside front shock absorber, and continued brake pad and pipe advisories, indicating a vehicle with multiple wear points compounding rather than being resolved. The usage profile is broadly typical for the vehicle's age, averaging around 11,500 miles per year, though the record shows considerable clustering with several tests occurring within days of each other. Both the 2023 and 2025 entries show a failed test followed within a day or two by a retest pass, which is a normal pattern for rectification work but does mean the underlying defects were genuine at the time of inspection. The mileage progression between tests suggests the vehicle is being driven reasonably consistently rather than left idle for long stretches, which is generally favourable for keeping seals, brake components, and drivetrain bearings mobile, but it also means the wear items flagged are accumulating under active use rather than deteriorating purely from standing. For a prospective buyer, the brake pipe corrosion history is the single most important area to investigate physically. The 2023 test recorded excessively corroded front-to-rear brake lines on both sides at the rear, and although no further corrosion failures have appeared since, brake lines on a fifteen-year-old ML of this mileage are a known weak point and a thorough underbody inspection is essential to check for pitting, rust bubbling, or previous repairs. On a test drive, the pedal should feel firm with no excessive travel or sponginess, and any pulling under braking would warrant immediate concern. The 2025 advisory for oil misting on the offside front shock absorber and the 2025 major for the prop shaft flexible coupling deterioration also deserve a focused listen at low speed over undulating surfaces for clonking from the driveline, and any knocking or damping irregularities from the front suspension over rough roads. Equally important are the recurring tyre edge wear advisories, which have appeared on near front, offside front inner, and near rear positions across multiple tests. Inner edge wear on the front particularly is characteristic of worn suspension bushes or worn thrust arms, both common on this model at high mileage, so a test drive should include firm cornering to detect vague steering response or tramlining, and a check for uneven tread patterns across the fitted tyres. The persistent stop lamp failures across 2023, 2024, and 2026 point to either a wiring or bulb holder issue that has not been permanently resolved, and all rear lighting circuits should be confirmed functioning during any viewing. Finally, the handbrake outer housing damage noted since 2023 and the exhaust clamp issue from 2023 should be confirmed as properly rectified, as insecure exhaust sections and damaged handbrake cabling can both progress to MoT failure if left unaddressed.