2002 Mercedes ML 3.2L Petrol · OV02 PXY

A persistent pattern of chassis and braking deterioration defines the mechanical profile of this 2002 Mercedes ML, with advisories recurring across nearly every MOT cycle for the past four years. The most recent test on 2026-03-16 returned a pass, but the front brake pads were flagged as wearing thin once again and the rear brake pipe corrosion advisory has now appeared in three consecutive tests, signalling an unresolved deterioration rather than a one-off observation. The trend is arguably worsening rather than improving, evidenced by a dangerous failure recorded on 2023-03-20 when the nearside rear anti-roll bar linkage was found to be entirely missing. Combined with steadily accumulating shock absorber casing damage and widespread coil spring corrosion on both rear corners, the underside of this vehicle clearly demands close inspection before purchase. With 113,431 miles accumulated over approximately 24 years, this ML averages around 4,726 miles annually, which is markedly low for a vehicle of its age and class. This restrained usage figure suggests either light seasonal driving, extended periods of inactivity, or a primarily short-journey profile, all of which carry their own mechanical consequences. Limited mileage reduces wear on major drivetrain components but does little to prevent the underbody corrosion and seized component issues that low-use vehicles commonly develop. There are no notable gaps in MOT testing, with annual checks consistently recorded since at least 2023, which at least confirms the vehicle has remained on the road and subject to regular scrutiny throughout this period. Given the recurring brake pipe and coil spring advisories, a prospective buyer should carry out a thorough underbody examination, ideally with the vehicle raised on a ramp, paying particular attention to the condition of all flexible and rigid brake lines along their full length, especially where they run along the chassis rails and rear axle. Surface rust coating applied over corrosion, as indicated by the repeated advisories, suggests the pipes have been treated rather than replaced, and any flaking, pitting, or weeping around pipe joints would warrant immediate rectification. Both rear coil springs should be inspected for cracks, particularly at the lower coils where stress is greatest, and the rear shock absorbers warrant close attention for any fluid seepage beyond the cosmetic casing damage already noted, with a corresponding check for uneven damping or clonking noises over uneven surfaces during a road test. The missing anti-roll bar linkage flagged as dangerous in 2023, combined with the chronic advisories on rear suspension components, makes a careful road evaluation essential. Listen for knocking or rattling from the rear axle, particularly over speed humps and rough tarmac, and check for wandering or vagueness through high-speed corners which may indicate remaining play in the rear anti-roll bar bushes or link connections. The brake pedal should feel firm and progressive; any sponginess, excessive travel, or judder under braking would suggest the corroded brake pipes may be close to failure or that caliper sliding mechanisms are binding. Finally, given the age and mileage profile, a precautionary check of the Airmatic air suspension system, a known weakness on this generation of ML, would be advisable, listening for the compressor cycling excessively after shutdown and observing whether the vehicle settles overnight, both classic indicators of leaking air springs or aged dryer unit failure.