2009 Mercedes ML 3.0L Diesel · KY09 UNW

The most recent MOT on 2025-06-14 showed the 2009 Mercedes ML passed with 150,315 miles, but this follows a pattern of recurring mechanical and safety issues in earlier tests. The 2024-06-06 failure highlighted significant problems, including non-working front and rear lamps, excessive exhaust smoke (indicating potential engine or emission system faults), and a parking brake efficiency below 50%, which is a critical safety risk. These issues were not repeated in the 2024-06-12 pass, suggesting repairs were made, but the 2023 failures reveal a history of electrical, suspension, and fluid-related defects. The vehicle’s condition appears to have fluctuated, with no clear trend of improvement or worsening. While the 2025 pass indicates some issues were addressed, the 2023 and 2024 failures point to persistent vulnerabilities in the lighting system, exhaust, and suspension. The 2023 MOT noted an oil leak (not excessive) and a fractured rear coil spring, both of which could signal aging components. The 2024 exhaust emissions failure raises concerns about engine health, as smoke levels exceeding limits often correlate with worn piston rings, valve seals, or catalytic converter issues. The mileage of 150,315 miles over 17 years averages 8,842 miles per year, which is typical for the vehicle’s age. This suggests moderate use rather than heavy wear, but older vehicles with such mileage may still face component fatigue. The absence of major defects in the 2025 MOT is positive, but the prior failures indicate that the car requires careful inspection for hidden faults, particularly in the engine, exhaust, and braking systems.