2016 Mercedes-Benz B-Class 1.5L Diesel · DF66 WCC

The most recent MOT test on 20 January 2026 resulted in a pass with no advisories recorded; however, the same date also shows a prior failure on this inspection occasion for rear brake pads worn down to the wear indicator, which is a Major category defect. A previous failure was also recorded on 20 January 2025 for an inoperative registration plate lamp and a missing nearside front road wheel fixing, both Major items. These failures were remedied and the vehicle subsequently passed on retest within the same days. Looking at the full MOT history over the past five years, the vehicle has passed four tests and recorded two failures and two advisories. The maintenance trend appears broadly stable, with the only recurring theme being brake-related wear, which is expected on a car of this age and mileage. The presence of all four brake discs flagged for wear in January 2022, followed by a rear brake pad failure in January 2026, suggests that the braking system has been progressively wearing and that the discs themselves may now be approaching a similar replacement threshold, particularly at the rear. The recorded mileage of 91,679 miles over approximately ten years equates to an average annual mileage of around 9,168 miles, which is broadly typical for a vehicle of this age and class. There are no significant gaps in the MOT record to suggest long periods of standing, and the mileage accumulation appears consistent and steady, which is generally favourable for mechanical longevity as opposed to the corrosion and fluid degradation risks associated with low or sporadic use. That said, at this mileage, the wear on consumable components such as brake pads, discs, tyres, and suspension bushes is becoming more pronounced, and a buyer should be aware that several major service items may be due or imminent within the next 12 to 24 months, particularly within the braking and suspension systems. Given the recorded brake wear pattern, a prospective buyer should carry out a focused inspection of the braking system during any viewing and test drive. The rear brake pads were replaced in early 2026 after being worn to the indicator, but it is worth confirming the condition of the rear discs, as they were already flagged for wear in 2022 and have since covered further mileage. On a test drive, listen for any brake shudder or pulsation through the pedal under firm application, which would suggest disc lipping or run-out, and check for any scraping or grinding noises that may indicate pad wear or a seized caliper slider. Inspect the front discs visually through the wheel spokes for a pronounced outer lip, and verify that the calipers retract cleanly by feeling for residual drag after the brakes have been released from a gentle stop. Uneven tyre wear, particularly on the nearside front as previously noted in 2022 and 2024, should also be examined as it can indicate underlying suspension geometry issues or worn bushes. Beyond the braking system, this ten-year-old Mercedes-Benz B-Class warrants several age-related checks irrespective of its MOT pass status. Tyre sidewalls should be inspected carefully for perishing and cracking from age, as rubber deteriorates over time even with adequate tread depth, and the spare or inflation kit should be checked for serviceability. The 12V battery, which is typically original or near-original by this point, should be load-tested as a weak battery is one of the most common causes of roadside breakdowns in older vehicles. Coolant, brake fluid, and automatic transmission fluid (if applicable) all degrade with calendar age rather than mileage, so verify when these were last changed and budget for a fluid service if records are unclear. Finally, examine the underbody, exhaust mounting rubbers, and suspension components for corrosion or wear, particularly the coil springs, anti-roll bar drop links, and lower control arm bushes, which are known wear items on this platform at this mileage and can produce audible clonks over uneven surfaces if deteriorating.