2013 Mercedes-Benz SLK 2.1L Diesel · TL12 TAN

A 2026-05-05 MOT test yielded a passing result, yet the underlying mechanical picture reveals a pattern of recurring advisories and a single major failure that demands scrutiny. Across the twelve-year service history, the vehicle has produced four passes and three failed attempts, with the most recent entry being the 2024-05-08 failure involving an ABS warning lamp and a missing rear wheel bolt. Subsequent tests through 2026 continue to show persistent concerns, including pitted brake discs, service brake imbalances, and engine service overdue status, indicating that while the latest test cleared the vehicle, the cumulative effect of earlier deficiencies has not fully resolved itself. The current passing result does not erase the trail of technical issues that have characterized the car's lifecycle up to today. The recorded mileage of 44,369 miles on a thirteen-year-old SLK represents a notably low accumulation rate of approximately 3,413 miles per year, which stands in contrast to typical usage patterns for vehicles of this age. The absence of an MOT between June 2022 and May 2024 spans nearly eleven months, followed immediately by a failed test in May 2024 that exposed critical safety systems. When combined with the 2026-05-05 passing result, this timeline suggests either very infrequent driving or prolonged periods where the vehicle remained inactive, allowing existing wear patterns to persist without regular intervention. The slow build-up of brake wear, tire damage, and alignment-related advisories implies that even modest annual mileage has contributed to measurable deterioration across the chassis and drivetrain components. Focusing on the documented failures, the front brake pads at the 2026-05-05 test were reported as worn thin (1.1.13 (a) (ii)), and the same test noted slight damage to the near-side front tyre (5.2.3 (d) (ii)). The 2024-05-08 failure introduced an ABS fault indicated by a warning lamp (1.6 (b)) alongside a missing wheel bolt on the near-side rear axle (5.2.1 (a) (i)), representing serious structural and electronic safety concerns. During a test drive, pay particular attention to whether the ABS warning returns under normal conditions, inspect the front brake pad thickness visually and via the dashboard indicator, and examine the near-side front tyre for uneven wear or cuts resulting from the noted damage. Additionally, verify that the rear wheel bolt is properly secured and that the ABS function responds correctly when the hazard light or warning system is activated. For a prospective buyer, the primary red flags stem from the ABS fault and the missing wheel bolt, both of which indicate immediate safety risks that should not be ignored regardless of the latest passing result. The pitted or scored brake discs identified in multiple years suggest that the braking system has been subjected to considerable wear, potentially requiring replacement or professional balancing. Given the low mileage figures, the likelihood of extensive suspension bush wear may be reduced, but the history of alignment-related advisories (service brake imbalance and wheel mounting issues) warrants a thorough visual inspection of the subframe and suspension linkages for rust or fatigue. A hands-on assessment should confirm that the ABS warning lamp extinguishes normally and that the vehicle handles without pulling to one side, particularly when navigating turns that engage the affected rear wheel. If any of these indicators are present, caution is advised and further investigation by a qualified mechanic is recommended before committing to this purchase.