2022 Mercedes-Benz Unknown 5.1L Heavy oil · L22 DSX

The most recent MOT test completed on 07 August 2026 resulted in a pass with no recorded defects or advisories. Looking back through the history from 2023, the vehicle has maintained a consistent and stable passing record without any noted failures or warnings. This suggests a disciplined approach to maintenance, which is vital for a vehicle of this age and usage profile. The absence of advisories is a positive indicator that the vehicle has been kept in a condition that meets the required safety and environmental standards throughout its recent testing cycle. However, the recorded mileage of 142,172 miles against a four-year age profile is exceptionally high, averaging approximately 35,500 miles per year. This level of usage places significant mechanical stress on the vehicle compared to a standard commuter car. While the MOT history is clean, you must account for the accelerated wear and tear on all moving parts. High-mileage vehicles typically experience faster degradation of suspension components, braking systems, and drivetrain seals. The high annual mileage suggests the vehicle may have been used for long-distance motorway driving, which is generally easier on the engine than stop-start urban driving, but still necessitates frequent servicing of consumables. During your physical inspection and test drive, you should look beyond the clean MOT certificate. Listen carefully for any dull thuds or metallic clunks when driving over speed bumps or uneven road surfaces, as this could indicate worn suspension bushes or failing shock absorbers. Test the braking performance thoroughly; any vibration through the pedal or steering wheel may suggest warped brake discs, while a pulling sensation could point to binding calipers. Additionally, inspect the tyres for uneven wear across the tread, which can be a symptom of worn suspension geometry or incorrect alignment caused by high-mileage usage. Given the intensive usage, it is imperative to verify the service book stamps and invoices to ensure that oil changes and fluid replacements have been conducted at appropriate intervals. Do not rely solely on annual intervals; at this mileage, service should be based on distance. Check the engine bay for any signs of fluid weeping from gaskets or hoses, and inspect the drive belts for cracking or glazing. Finally, ensure the battery is in good health, as high-mileage vehicles can sometimes experience electrical strain if the charging system is working harder to compensate for age and usage.