2018 Mercedes-Benz Vito 2.1L Diesel · EX18 GLK

The defining mechanical chapter in this Vito's MOT history is the failure recorded on 3 December 2024, which identified an excessively worn offside front lower suspension arm ball joint alongside a parking brake efficiency below fifty percent of the required value — the latter being categorised as a dangerous defect. Both items were resolved the following day at the retest on 4 December 2024, which passed without advisories, and the vehicle has since completed a further pass on 3 June 2025 (with only a minor windscreen chip noted) and most recently on 7 May 2026 with a clean sheet. While the immediate post-repair record is reassuring, the nature of the December 2024 defects should not be dismissed lightly: a ball joint worn beyond the major threshold and a dangerously under-performing parking brake on a commercial-derived vehicle of this mileage point to components that had been allowed to deteriorate substantially between tests. The mileage profile of 151,912 miles over approximately eight years equates to an annual accumulation of around 18,989 miles, which is a notably high usage rate for a Vito of this age and is consistent with sustained commercial or fleet operation. This level of mileage carries direct mechanical consequences, particularly for the braking system, suspension bushes, coil springs, anti-roll bar links, wheel bearings, clutch and dual-mass flywheel (if manual), and the general integrity of flexible components such as brake hoses and gaiters. The historical test pattern shows no multi-year lay-up and broadly regular annual testing from March 2022 through to May 2026, indicating the vehicle has been in continuous service rather than stored, and the mileage between tests — for example, the run from June 2023 to December 2024 — appears substantial, which aligns with the wear pattern observed at the failure. For a prospective buyer, the priority areas to scrutinise are precisely those implicated in the 2024 failure. The offside front lower suspension arm ball joint should be inspected for play by hand with the wheel lifted, and a test drive should be conducted over uneven road surfaces, listening for clonks, knocks or shudders through the steering, particularly under braking or when traversing speed bumps. The steering should track straight without pull, and any vagueness on centre or irregular tyre wear on the offside front would suggest the repair has not fully resolved the underlying wear. On the braking side, the parking brake lever or pedal should hold the vehicle stationary on a noticeable incline without excessive travel, and the footbrake should feel firm and progressive without a low or spongy bite point; any judder under braking or pulling to one side would warrant further investigation of discs, pads and caliper slide pins. Beyond the previously flagged items, the high commercial-style mileage makes a thorough under-bonnet and under-floor inspection essential. Look for evidence of oil misting or seepage around the engine and transmission joints, condition of the coolant and brake fluid (which on a high-mile van should have been replaced more than once), and any corrosion around suspension subframes, brake pipe runs and the exhaust system — areas that are not routinely flagged at MOT but commonly degrade on hard-working Vitos. Inspect the rear load area floor and sills for repairs or underseal bubbling, check that all warning lamps extinguish promptly after start-up, and confirm that the dual rear wheels (if applicable to this derivative) are correctly matched for tread depth. A pre-purchase inspection by a Mercedes-Benz specialist or an independent with commercial vehicle experience would be a prudent investment given the mileage and the history of a dangerous-category brake defect.