2012 Mercedes-Benz ML 3.0L Diesel · YS12 OTH

The 2012 Mercedes-Benz ML presents a broadly stable maintenance record through its recent MOT history, though the current certificate is now over two years old. The most recent test, conducted on 13 February 2024 at 112,172 miles, passed with an advisory for an oil leak that was not deemed excessive under item 8.4.1 (a) (i). This is a recurring minor concern rather than a new failure, having first appeared in the November 2021 test at 86,551 miles under the same classification. The vehicle has not failed an MOT within the supplied record, and no dangerous or major defects have been recorded. The trend is therefore stable, with no evidence of escalating mechanical deterioration, though the age of the current certificate means a fresh assessment of the vehicle's condition is warranted. The mileage accumulation is consistent with typical use for a vehicle of this age. Between the August 2020 test at 66,690 miles and the February 2024 test at 112,172 miles, the vehicle covered approximately 45,482 miles over roughly three and a half years, equating to around 13,000 miles per year. This aligns closely with the overall lifetime average of roughly 8,000 miles per year, suggesting sustained and regular use rather than prolonged standing or exceptionally light driving. The record is clean in terms of test frequency, with no unexplained gaps in the MOT timeline that would raise concerns about extended periods off the road. The recurring oil leak advisory, flagged in both November 2021 and February 2024, warrants close inspection. On a vehicle of this age and mileage, common sources include degraded valve cover gaskets, oil cooler seals, or crankshaft oil seals, any of which can worsen over time if left unaddressed. A buyer should have the underside and engine bay examined for fresh oil residue, paying particular attention to the turbocharger feed and return lines, which are known weak points on Mercedes-Benz diesel engines of this era. The exhaust emissions reading too clean to register on the gas analyser, noted in both 2020 and 2021, is unusual and could indicate a faulty or tampered diesel particulate filter or sensor issue, though this has not resulted in a failure. Beyond the advisory items, a thorough in-person inspection should focus on the structural integrity of the chassis and suspension components. At 112,172 miles, front and rear suspension bushes, coil springs, and shock absorbers are well within the typical wear window and should be checked for deterioration. Brake discs and pads, particularly at the rear, should be measured for thickness and inspected for uneven wear or binding calipers, a common issue on heavier SUVs of this generation. The body mounts and subframe mounting points should be examined for corrosion, as these vehicles are susceptible to rust in critical load-bearing areas. A pre-purchase inspection by a qualified technician, ideally with access to Mercedes-Benz-specific diagnostic equipment, is strongly recommended before committing to the purchase.