2015 Mercedes-Benz CLS 2.1L Diesel · BER 10N

The vehicle remains roadworthy as of its most recent MOT on 2026-02-13, passing with a minor brake disc wear defect noted under 1.1.14 (a) (i). However, the maintenance trend is worsening — the 2025-02-12 failure due to a major exhaust leak indicates a significant mechanical issue that was not resolved before the subsequent pass, suggesting either deferred repair or a temporary fix. The prior 2024-02-13 pass was clean, but the 2023-02-14 test flagged oil and coolant leaks, which, if unresolved, can lead to more serious engine or cooling system damage. The pattern shows increasing mechanical attention required, not decreasing. The mileage of 132,625 miles at 11 years old equates to approximately 12,057 miles per year — a high annual average that implies consistent use or frequent driving. The jump from 117,589 miles in February 2025 to 132,625 miles in February 2026 represents 15,036 miles in just one year, which is notably aggressive for a luxury sedan. This rapid accumulation suggests the vehicle has been driven heavily in recent months, likely accelerating wear on tyres, suspension components, brake pads, and drivetrain elements. The gap between the 2024 and 2025 tests is minimal — only 12,545 miles over 12 months — which may indicate the car was parked or driven infrequently during that period, followed by a surge in usage. Buyers should inspect the rear suspension and brake system closely, as the 2026 MOT noted front brake disc wear, and the 2025 failure involved a major exhaust leak — a sign of potential corrosion or structural fatigue in the exhaust manifold or downpipe. The 2023 coolant and oil leaks point to possible gasket or seal degradation, which may have been patched rather than fully repaired. Check for rust on the underbody, especially around the exhaust and wheel arches, as high mileage combined with potential neglect of exhaust issues can accelerate corrosion. Also verify the condition of the rear suspension bushes and coil springs, as high annual mileage often leads to accelerated wear in these areas, particularly on a Mercedes-Benz CLS with its sporty handling characteristics.