2018 Mercedes-Benz S-Class 2.9L Diesel · HJ68 FYZ

The most recent DVSA MOT test for this 2018 Mercedes-Benz S-Class was conducted on 6 August 2026 and resulted in a pass with no defects or advisories recorded. This outcome, when considered alongside the four preceding tests from 2022 through 2025 which all returned clean passes, indicates a stable and well-maintained mechanical trend over the test record period. The absence of any recorded advisories or failures across five consecutive tests is a strong indicator that the vehicle has been serviced to a competent standard, with braking components, suspension geometry, lighting systems, emissions output, and structural integrity all meeting DVSA roadworthiness criteria at each assessment. There is no deterioration in the pass profile to suggest neglect or emerging systemic issues, which is particularly reassuring given the vehicle's premium engineering and the demands placed on its chassis and drivetrain. With approximately 241,192 miles accumulated over eight years, this S-Class averages around 30,149 miles annually, placing it firmly in the high-mileage category for its age and significantly above the typical 10,000 to 12,000 mile private usage norm. High annual mileage of this nature generally correlates with accelerated wear on consumable items, including brake pads and discs, tyres, drive belts, and engine oil service intervals, as well as increased fatigue on suspension components such as coil springs, control arm bushes, and shock absorber mounts. There are no apparent significant gaps in the MOT cadence, suggesting the vehicle has been in consistent operational use rather than left standing for prolonged periods, which is beneficial for avoiding issues such as brake caliper seizure, flat spots in tyres, or coolant circuit degradation from inactivity. Despite the clean MOT record, a prospective buyer should undertake several age and mileage-appropriate physical inspections before committing to purchase. At this mileage, the brake discs are likely approaching or have already undergone a second skim, and the caliper guide pins and slider mechanisms should be checked for free movement, as binding calipers are a common issue on high-mileage European saloons and lead to uneven pad wear and pulling under braking. The coil springs and air suspension struts, if equipped with Airmatic, warrant close examination for sagging at the corners, slow rise times, or compressor noise on cold start, as these systems are costly to refurbish. On a test drive, listen for clonks from the front suspension over speed bumps, monitor for any vibration through the steering wheel indicative of warped discs or imbalanced wheels, and observe whether the transmission shifts smoothly across all ranges, as the 7G-Tronic and 9G-Tronic gearboxes can develop torque converter shudder or mechatronic issues at this mileage. Additional buyer guidance should focus on time-sensitive items that the MOT does not directly cover but are critical at this vehicle's age. Tyre sidewalls should be inspected for perishing or cracking caused by age-related rubber degradation, particularly if the vehicle has been used heavily on motorway mileage where ozone exposure accelerates deterioration, and all four tyres should be of matching brand and tread depth to suit the S-Class's all-wheel-drive system if applicable. The 12V battery, given its likely multiple replacements by now, should be load tested to confirm cranking performance, as modern Mercedes-Benz electrical systems are sensitive to voltage drops. Engine coolant, brake fluid, transmission fluid, and differential oil should all be verified as recently renewed, as these are calendar-based services that lose effectiveness over time regardless of mileage; a full service history confirming these renewals is essential. Finally, examine the underbody and wheel arch liners for any corrosion beginning to take hold, particularly around suspension mounting points, and ensure the exhaust system is solid without signs of cracking at the flex joints or rear silencer, as these are common replacement items on high-mileage executive saloons.