2012 Mercedes-Benz B-Class 1.8L Diesel · SK12 NRO

The most recent MOT test on the 2012 Mercedes-Benz B-Class occurred on 2026-05-05, resulting in a clean pass with only a minor defect related to the offside windscreen wiper blade. This follows a pattern of fluctuating results over the past four years, with two notable failures in 2024 and 2025, each marked by significant issues such as worn brake pads, misaligned headlamps, and a malfunctioning engine management system. The vehicle’s MOT history is not entirely stable, as the failures indicate recurring problems with suspension components, brake system integrity, and lighting alignment, which suggest underlying wear or potential neglect in maintenance. While the latest test shows improvement, prospective buyers should remain cautious, as the vehicle’s past failures highlight areas requiring closer attention during inspection. The recorded mileage of 85,827 miles for a vehicle aged approximately 14 years represents a reasonable annual usage rate of around 6,130 miles, which is typical for a car of this age and class. However, the MOT history does not provide explicit details on usage patterns, but the presence of multiple advisories and failures—particularly concerning brake pipe corrosion and worn rear tyres—implies either prolonged periods of inactivity or inconsistent maintenance. Prolonged standing can exacerbate issues like brake pipe corrosion, leading to potential leaks or binding, while excessive mileage accelerates wear on suspension components like anti-roll bar linkages and brake pads. The vehicle’s history suggests that while the mileage alone does not justify immediate concern, the combination of age and past MOT failures warrants a thorough inspection to assess the extent of wear and any underlying mechanical fatigue. During a physical inspection, prospective buyers should prioritise checking the brake system for signs of corrosion on the pipes and discs, as the advisories from 2021 and the failed brake pad thickness in 2025 indicate ongoing degradation. Listen for uneven brake pedal travel or a spongy feel, which could signal binding calipers or worn brake pads. Test drive the vehicle to assess suspension performance, particularly focusing on the anti-roll bar linkages, as the 2024 MOT failures highlighted compromised ball joints that may cause clunking or excessive noise when driving over bumps. Additionally, verify the headlamp alignment and functionality, as the 2025 MOT failures point to potential misalignment or electrical issues that could affect visibility and safety. For a vehicle of this age and mileage, the buyer should also inspect the tyres for signs of sidewall perishing, which can occur even with moderate mileage due to prolonged exposure to the elements. Check the tread depth and look for uneven wear patterns, as the 2024 MOT advisories about rear tyres worn close to the legal limit suggest that further wear may be imminent. Examine the exhaust system for leaks or corrosion, particularly around the catalytic converter and tailpipe, as standing can accelerate rust formation. A practical next step would be to verify the service history, ensuring that fluid servicing—such as brake fluid, coolant, and transmission fluid—has been conducted at the recommended intervals, as calendar-based degradation can become critical in older vehicles. Finally, test the 12V battery and starter system, as the 2025 engine MIL failure may have been related to electrical or ignition issues, and a weak battery could exacerbate problems in an already aged engine.