2009 Mercedes-Benz S-Class 3.0L Diesel · NE09 EDD

This Mercedes-Benz S-Class has maintained a clean MOT history with no recorded defects across the last five consecutive tests, most recently passing on 17 June 2025 at 65,905 miles. The absence of advisories or failings suggests the vehicle has been subjected to consistent, if not rigorous, servicing—though the lack of specific maintenance notes means critical intervals (e.g., timing belt, valve clearance, or high-pressure fuel system checks) cannot be confirmed. The most recent test occurred just over a year ago, placing it within the DVSA’s recommended 12-month interval for vehicles over ten years old, though the 2026 test is now overdue. No pattern of recurring issues emerges from the record, which is unusual for a vehicle of this age, implying either meticulous owner care or a history of professional oversight. The recorded mileage of 65,905 miles over 17 years equates to approximately 3,877 miles annually, a figure significantly lower than the UK average for a luxury executive car of this vintage. The intervals between tests—ranging from 5,000 to 7,000 miles—suggest the vehicle has spent extended periods stationary, which could either indicate light usage or prolonged storage without engine running. The most notable gap is between the 2022 and 2023 tests, where mileage increased by just 6,308 miles in a year, reinforcing the low-usage pattern. While low mileage generally correlates with reduced wear on high-stress components like suspension bushes, coil springs, or drivetrain synchronisers, it also raises questions about fluid changes (e.g., gearbox oil, differential fluid) and potential corrosion risks from static exposure. Given the absence of MOT advisories, a buyer should prioritise an independent inspection of the suspension geometry , particularly the rear multi-link system, where wear on bushes or tie rods often goes unnoticed until advanced. The rear brake calipers and discs warrant scrutiny, as binding or uneven wear is a common silent failure in high-mileage luxury vehicles, even if not flagged in tests. Corrosion should be checked at the subframe mounts , exhaust manifold , and wheel arches , especially if the vehicle has spent time in coastal or high-humidity areas. The high-pressure fuel system (common in OM642/OM646 engines) should be assessed for leaks or degraded injectors, as these failures often manifest gradually without MOT detection. Finally, verify the timing belt or chain status—if the last service record is unavailable, assume it is overdue and budget for replacement if the mileage exceeds 100,000 miles. The clean MOT record is a positive indicator, but the lack of servicing details introduces uncertainty around hidden mechanical longevity.