2013 Mercedes-Benz SLK 2.1L Diesel · 12 BCX

The vehicle’s roadworthiness status is currently unstable, as evidenced by its January 2026 MOT failure—just two days after passing—due to severe tyre damage and exposed cords on both front tyres. This recent failure indicates a critical oversight in basic maintenance, particularly in tyre condition, which poses an immediate risk of blowout. The preceding MOT history from 2024 and 2022 shows no defects, suggesting the failure was not part of a gradual deterioration but rather a sudden lapse in inspection or replacement. Buyers should treat this as a red flag for negligence, as tyres are the only safety-critical components to fail in this period. The mileage progression of 79,074 miles over 13 years averages around 6,083 miles annually, which is typical for a vehicle of this age. However, the gap between the 2022 and 2024 tests—covering 8,846 miles in just under two years—does not reveal any unusual spikes or prolonged inactivity. The most concerning aspect is the negligible mileage increase (just 2 miles) between the January 2026 pass and fail, implying the vehicle was likely stationary or driven minimally during this period. This stagnation could exacerbate issues like suspension corrosion or brake binding if the car was left exposed to the elements. Given the recent tyre failures, an immediate inspection of all four tyres is essential, focusing on sidewall integrity, tread depth uniformity, and signs of uneven wear or embedded debris. The front tyres in particular should be examined for hidden damage, as the MOT tester only noted visible issues. Beyond tyres, buyers should scrutinise the front suspension components—specifically the nearside and offside front wheel bearings, steering rack seals, and suspension bushes—for excessive play or fluid leaks, as these are common wear points at this mileage. The absence of brake-related failures in prior tests does not preclude binding calipers or worn pads, so a visual check of disc thickness and rotor runout is advisable. Finally, the underbody should be inspected for corrosion around the wheel arches, subframe, and exhaust mounts, as prolonged stationary periods can accelerate rust formation.