2016 Mercedes-Benz B-Class 1.5L Diesel · LG66 OOC

A consistent thread running through the MOT history of this Mercedes-Benz B-Class is the steady progression of front brake disc wear, with advisories appearing across three consecutive tests in 2024 and 2025 before disappearing in the most recent pass on 4 February 2026, which recorded no defects at all. The single failure on 16 January 2024 was limited to a nearside front wiper not clearing the screen effectively and an inoperative nearside rear registration plate lamp, both relatively trivial electrical and wiper issues that were clearly rectified before the re-test nine days later. The overall pattern is one of a vehicle that has maintained roadworthy status without any structural, suspension, exhaust, or corrosion advisories, and the clean February 2026 test suggests the previous brake disc wear was either monitored or addressed. Mechanically, this is a reassuring trajectory, particularly for a premium German compact MPV where suspension component longevity and structural corrosion are typical long-term concerns. With 68,491 miles recorded over a ten-year lifespan, the B-Class has averaged roughly 6,849 miles annually, a figure that sits squarely within normal expectations for a vehicle of this age and type, neither indicating excessive motorway mileage nor long periods of inactivity that might allow seals, boots, and brake components to deteriorate through standing. The mileage accumulation has been steady and consistent from test to test, with no dramatic gaps or sudden jumps that would suggest clock inconsistencies or prolonged off-road storage. This kind of moderate usage typically allows components to wear evenly and predictably, and it means the major service items such as cambelts, automatic transmission fluid, and coolant would have been attended to at sensible intervals rather than under heavy-duty conditions. For a prospective buyer, the priority should be a physical inspection of the front brake discs and pads, as the repeated advisories over a three-year window indicate these components are now approaching the point where replacement is likely due or imminent. On a test drive, listen for any scraping or grinding from the front wheels on light braking, and feel for vibration or pedal pulsation through the brake pedal which would suggest disc lipping or runout. Beyond the braking system, pay close attention to the suspension, particularly the front lower wishbones, anti-roll bar drop links, and top mounts, as these are known wear items on the B-Class platform and have not yet shown up on advisories only because the discs took centre stage. Also confirm the operation of all wipers, every exterior lamp including the registration plate illumination, and that the windscreen has no significant chips or cracks in the driver's sweep area, as these were the exact failure points previously recorded. Finally, inspect the underside of the vehicle on a ramp or with a torch against the ground for any early signs of corrosion on the subframe, brake pipes, and rear axle mounting points, as Mercedes vehicles of this era can develop surface corrosion in these areas even when MOT advisories have not yet flagged them. Check that all warning lamps illuminate and extinguish correctly on ignition, and verify the operation of the central infotainment and climate control systems, as electronic glitches in the COMAND unit are a known B-Class issue not visible from an MOT perspective. A thorough test drive should include driving over uneven surfaces and speed humps at low speed to detect any clonking from the front suspension, as well as a tight turning circle check to expose worn inner track rod ends. With the MOT history showing a generally well-maintained vehicle with only minor recurring brake wear and a clean current pass, this B-Class presents as a sound mechanical proposition provided the brakes are addressed and a close inspection confirms the absence of any developing suspension or corrosion issues.