2021 Mercedes-Benz Unknown 7.7L Diesel · GK06 PET

The vehicle currently holds a roadworthy status, passing its most recent inspection in February 2026 at 302,060 miles with no recorded defects. The maintenance trend appears stable despite the extreme mechanical stress on the components. While a failure occurred in January 2025 at 241,281 miles, the vehicle passed the retest just 136 miles later, indicating that the owner addressed the specific immediate faults identified by the tester. The mileage accumulation is exceptionally high for a five-year-old vehicle, averaging over 60,000 miles per year. Data shows a significant surge in usage between February 2023 (75,145 miles) and February 2024 (186,412 miles), where the car covered over 111,000 miles in a single year. This rate has remained high, with an additional 115,648 miles recorded in the following two years. Such pattern suggests consistent long-distance motorway use or commercial fleet application, which places accelerated strain on the drivetrain, turbocharger, and suspension geometry. A buyer must prioritise a physical inspection of the heavy-duty components most susceptible to high-mileage wear. Focus on the condition of the suspension control arm bushes and shock absorbers, as these often degrade rapidly under such high-frequency use. The braking system should be checked for thin discs and binding calipers, given the thermal cycles endured. Although the MOT record is clean, a thorough check of the chassis and subframe for stress corrosion or weakened mounting points is essential to ensure the structural integrity has not suffered from the relentless vibrations.