2002 Mercedes-Benz ML 2.7L Diesel · FX02 LTO

A pattern of steering and brake-related deterioration dominates the recorded MOT history of this 2002 Mercedes-Benz ML, with the most recent test on 2022-03-01 returning a clean pass but only after several intervening failures that reached the Dangerous category. The track rod ends have been a chronic concern, surfacing as slight-play advisories on the 2017 and 2018 tests before deteriorating into a Dangerous failure on both sides in July 2019, indicating that the wear was progressive rather than sudden. Far more serious was the February 2021 test, which recorded Dangerous defects for exhaust fumes entering the cabin and a fuel system component leaking to the extent of presenting a fire risk, alongside a Major for an excessively corroded front-to-rear brake pipe. The absence of any recorded advisories or failures in 2022 suggests remedial work was carried out after 2021, but a single clean test at the end of a long gap does not by itself confirm that the underlying corrosion issues affecting underbody brake lines and sealing around the exhaust have been comprehensively resolved on this 24-year-old chassis. Annual mileage works out at approximately 5,548 miles against the 133,140 miles recorded, which is low for the vehicle's age and consistent with either genuinely light use or extended periods off the road. The MOT history supports the latter interpretation to some extent, with no tests recorded between July 2019 and February 2021, suggesting the vehicle may have been laid up during that period before returning to test. Low accumulation combined with long standing periods tends to accelerate specific failure modes on a vehicle of this age, including corrosion of underbody brake and fuel lines, drying and cracking of rubber suspension and steering gaiters, and stiffening of brake caliper slide pins, all of which are consistent with the defects actually recorded here. Buyers should not assume that lower mileage on a near-quarter-century-old ML equates to proportionally less wear; the age of components and exposure to the elements often matters more than odometer readings at this stage. Test-drive attention should be focused first on the steering system, given the repeated track rod end defects. Listen for clonking or knocking from the front end over uneven surfaces, particularly over speed bumps and during full-lock manoeuvres, and feel for any vagueness, wandering, or slack in the steering that would indicate renewed wear at the rack end or inner tie rods. Inspect the track rod end boots for splits and grease loss, and check for uneven or feathered front tyre wear, which is a classic symptom of worn steering geometry on this model. Pay particular attention to the brake pedal feel and any pulling to one side under braking, as the 2021 brake pipe corrosion finding means the entire front-to-rear brake line run should be closely inspected for surface rust, pitting, or flaking, especially along the underbody and around the fuel tank area where road salt and moisture collect. Finally, the Dangerous exhaust and fuel system defects from February 2021 warrant specific verification that a proper repair, rather than a temporary fix, was carried out. On a test drive, check for any smell of exhaust fumes inside the cabin with the windows closed, particularly when the blower is on, which would suggest perished engine or cabin bulkhead seals. Inspect the fuel system components in the engine bay and beneath the vehicle for any signs of dampness, staining, or fresh sealant around joints. Given the age of the vehicle, also examine the subframe mounting points, coil springs, and suspension arms for corrosion, as these are known weak points on early M-Class chassis and were not specifically recorded as tested but represent the next likely areas of concern on a vehicle of this vintage and usage profile.