2018 Mercedes-Benz Sprinter 2.1L Diesel · LM18 DUJ

The most recent MOT on 21 July 2026 was a pass, but it was accompanied by a suite of advisories covering an oil leak, slight seepage from the power‑steering pipe, a smooth‑wearing brake pedal, brake discs that are approaching the wear limit and a mildly discoloured front side repeater lamp. Over the last two‑year span the vehicle has oscillated between passes and failures, with the 2024 failures highlighting serious front suspension ball‑joint wear and a binding service brake, while the 2025 failure was limited to a parking‑brake efficiency shortfall. Although the vehicle has cleared its most recent test, the persistence of the same oil‑leak advisory and steering‑rack play suggests that underlying faults have not been fully rectified, indicating a maintenance trend that is holding steady but still requires attention. At eight years old the Sprinter has logged 351,772 miles, which works out to roughly 44,000 miles per annum – well above the average for a light‑commercial van of this age. Such a mileage rate points to sustained, high‑load operation and will have accelerated wear on consumables such as tyres, brakes, suspension bushings and engine oil seals. There are no obvious gaps in the recorded mileage, implying the vehicle has been in regular use rather than sitting idle for long periods, which reduces the risk of age‑related perishing but increases the likelihood of cumulative component fatigue. A prospective buyer should focus the inspection on the recurring oil‑leak source – commonly a valve‑cover gasket, oil‑pan gasket or crankcase vent pipe – and verify that any seepage is not progressing to a drip that could contaminate the clutch or cause low‑oil warnings. The power‑steering hose should be examined for wetness around the fittings and for any loss of assist, especially under hard cornering where a slight loss of pressure may be felt as a heavier steering feel. The brake pedal’s smooth wear may indicate a worn master‑cylinder bore or pedal pivot; the pedal should feel firm and return promptly, and any sponginess or excessive travel should be flagged. Brake discs on both axles are already near the minimum thickness and show pitting; measure the remaining depth and listen for a high‑pitched squeal or vibration when braking – these are early signs that replacement will be required within the next few thousand miles. Front tyre tread is close to the legal limit and shows edge wear, so a thorough visual check for uneven wear patterns, sidewall cracking or bulges is essential, and the tyre should be rotated or replaced as soon as possible. Play in the steering rack inner joints can manifest as a vague, wandering feel or a clunk when turning sharply; a test‑drive over a pothole‑free surface should reveal any looseness. The rear shock absorbers’ light oil mist suggests seal wear; check for excessive bounce or a “bottom‑out” sensation on the rear axle, which would warrant shock replacement. Beyond the specific MOT items, the high mileage and age dictate a comprehensive time‑based service check. Verify that the timing chain or belt (depending on the engine variant) has been inspected and that any recommended tensioner or guide replacements have been carried out. The 12‑volt battery, now approaching a decade of service, should be load‑tested and its terminals inspected for corrosion. Examine the under‑body for rust, especially around the wheel arches, sills and rear cross‑member, as prolonged exposure to road salt can compromise structural integrity. Finally, confirm that the service book shows regular oil changes, coolant flushes and brake‑fluid replacements, as fluid degradation can precipitate further leaks and reduced braking performance. Addressing these points will give a clear picture of the Sprinter’s remaining roadworthiness and the likely cost of imminent remedial work.