2016 Mercedes-Benz A-Class 1.5L Diesel · LS66 DNU

The most recent MOT test on 2026-07-06 resulted in a clean pass, indicating no active roadworthiness defects at that time. However, the vehicle’s MOT history reveals a pattern of recurring issues that suggest underlying wear and potential long-term maintenance concerns. The most critical failure occurred in 2025-07-15, where a nearside rear coil spring fractured, a condition that is highly indicative of progressive structural fatigue in the suspension system. This failure was not rectified before the subsequent MOT, as the vehicle failed again in the same category, reinforcing the need for immediate attention to the coil spring replacement. While the 2024 and 2022 MOTs were clean, the presence of advisories—particularly the repeated brake pad wear and wheel distortions—demonstrates a maintenance gap that has allowed wear to accumulate beyond the point where minor adjustments would suffice. The advisory on insufficient washer liquid in 2024 highlights a lack of routine fluid maintenance, which can exacerbate corrosion and mechanical inefficiencies over time. The vehicle’s recorded mileage of 50,815 miles at a relatively low annual rate of approximately 5,082 miles per year is unusual for a ten-year-old car, particularly given the potential for long periods of inactivity. Lower mileage often correlates with increased risks of standing corrosion, particularly in the brake systems, wheel bearings, and underbody components, where moisture and road salt can accelerate deterioration. The suspension system, which has already failed due to a fractured coil spring, is particularly vulnerable to corrosion and wear when stationary for extended periods, as the springs and bushings can degrade faster without dynamic loading. Additionally, the tyre wear advisories from 2021 suggest uneven loading or misalignment, which could have been exacerbated by previous suspension issues. While low mileage can be beneficial in terms of reduced wear on consumables like oil and fuel, it also necessitates heightened vigilance for calendar-based maintenance, such as fluid changes and inspections of components prone to corrosion. Given the vehicle’s history of critical failures and advisories, the prospective buyer should prioritise a thorough mechanical inspection before purchase. The most urgent concern is the fractured rear coil spring, which requires immediate replacement to prevent further suspension failure, uneven ride quality, and potential damage to the axle or subframe. On a test drive, listen for clunking noises from the rear suspension, particularly when transitioning between bumps or when the vehicle is stationary and then moved, as this may indicate loose or failing components. Inspect the rear wheel alignment and suspension geometry, as a distorted wheel or binding calipers could exacerbate the existing wheel distortion advisories from previous MOTs. Additionally, check for excessive play in the rear suspension linkages or signs of oil leakage around the coil spring mounts, which could signal further deterioration. Beyond the immediate mechanical checks, the buyer should conduct a comprehensive inspection of the vehicle’s standing corrosion risks. Given the low annual mileage, focus on the brake system, wheel bearings, and underbody components, where salt and moisture can accelerate rust. Inspect the brake discs and pads for corrosion or binding calipers, which may explain the repeated brake wear advisories. Check the brake fluid reservoir for contamination or low levels, as standing brake fluid can absorb moisture and lead to corrosion in the hydraulic system. Verify the condition of the tyres beyond the legal limits, particularly for sidewall perishing or cracks, which can compromise tyre integrity at higher speeds. Lastly, since the vehicle has not undergone regular fluid servicing, consider a full fluid check—including engine oil, differential fluid, and coolant—along with a battery health assessment, as older batteries can fail more quickly when vehicles are left unused for prolonged periods. If possible, obtain a pre-purchase inspection from a qualified mechanic to confirm the coil spring’s condition and assess the broader structural integrity of the suspension and undercarriage.