2014 Mercedes-Benz ML 3.0L Diesel · OV64 HDD

The latest MOT test on the 2014 Mercedes-Benz ML at 93,626 miles recorded a passing result, though it was preceded by a failed inspection in August 2020, which highlighted two major faults: a malfunctioning tyre pressure monitoring system (TPMS) and an electronic braking system warning device indicating a fault. This history reveals a pattern of recurring issues, particularly in the braking subsystem, with the 2020 failure marking a critical point where the vehicle’s roadworthiness was compromised. Subsequent MOTs since then have shown advisories related to brake pad and disc wear, suggesting that while the vehicle is currently compliant, the underlying wear progression in the braking components may be a persistent concern that warrants closer attention. The recorded mileage of 93,626 miles over approximately 12 years equates to roughly 7,802 miles annually, which aligns with typical usage rates for this age group, though the data does not indicate any extreme acceleration in mileage accumulation. However, the gap between the 2020 failure and the 2026 MOT—spanning six years—could imply periods of either reduced or static usage, which may have allowed certain components, such as brakes and tyres, to degrade more slowly. Yet, the consistent wear advisories on the brakes suggest that the vehicle has likely undergone significant braking stress over time, particularly given the thinness of the front and offside rear brake pads. This wear pattern could indicate either aggressive driving habits or a design that prioritises performance over longevity in braking systems. For the prospective buyer, the most critical inspection should focus on the braking assembly, as the advisories suggest that the pads and discs are nearing or have exceeded their serviceable limits. On a test drive, listen for uneven brake pedal travel, a grinding or squealing noise during deceleration, or a vibration or shudder through the steering wheel, which could indicate warped discs or binding calipers. Visually inspect the brake discs for scoring, grooving, or excessive thickness reduction, and check the brake fluid level and condition in the reservoir—low or contaminated fluid may exacerbate brake system performance. Additionally, verify that the TPMS is functioning correctly by checking for consistent tyre pressures across all wheels and ensuring no warning lights illuminate during operation. Beyond the brakes, given the vehicle’s age and mileage, a thorough examination of the suspension and exhaust system is advisable. Inspect the coil springs, shock absorbers, and suspension bushes for signs of wear, such as excessive play in the steering or clunking noises when driving over bumps. Check for fluid leaks around the brake calipers, master cylinder, and wheel bearings, as well as undercarriage corrosion, particularly around the wheel arches and beneath the vehicle, which can compromise structural integrity. The tyre tread depth should be verified, with a focus on uneven wear patterns that may indicate alignment or suspension issues. Lastly, since the vehicle has not undergone a full service in several years, consider checking the fluid levels in the engine, transmission, and differential, as well as the condition of the 12V battery, which may have degraded from prolonged inactivity or age-related wear. If the battery is weak, test the starter motor and alternator for proper operation, as a failing starter could lead to persistent electrical faults.