2013 Mercedes-Benz SLK 2.1L Diesel · SL 9732

The most recent DVSA examination on 16 February 2026 resulted in a pass, but four advisories were recorded against the tyres, indicating that all four corners warrant close inspection prior to purchase. Two front tyres were flagged as worn close to the legal limit and exhibiting low wear on the inner edge, which is symptomatic of either incorrect wheel alignment, worn front suspension components such as control arm bushes, ball joints, or top mount bearings, or a combination of both. Additionally, both nearside tyres show slight damage to the outer sidewall; any bulging, cracking, or exposed cord should be treated as an immediate replacement requirement. Looking at the broader MOT history, the trend is broadly stable but with isolated mechanical concerns. The 2022 test contained a failure for a fractured nearside rear coil spring and a major defect for severely reduced nearside headlamp light intensity, alongside a minor for deteriorated anti-roll bar linkage ball joint dust covers on both sides. A fractured coil spring on a thirteen-year-old Mercedes is not unusual and the headlamp issue is often attributable to deteriorated reflector or lens condensation, but the anti-roll bar linkage wear is worth monitoring as it can progress to looseness in the front anti-roll bar assembly. Undertray fitments were noted in 2024 and 2025, which is a routine observation on vehicles of this era and not a defect. With 53,524 miles recorded over approximately thirteen years, this SLK is averaging around 4,100 miles annually, which is markedly below average and strongly suggests a vehicle that has spent extended periods stationary between uses. Such low annual mileage typically reflects either light leisure use or prolonged layups, and it carries particular implications for components that degrade with age rather than use. Brake discs and calipers are particularly susceptible to corrosion and seizure when left standing, especially on a rear-wheel-drive Mercedes with potentially complex electronic parking brake mechanisms. Coolant, brake fluid, and automatic transmission fluid all suffer calendar-based degradation regardless of mileage, and the records do not confirm any recent fluid servicing. The 12V battery is also a prime suspect on a low-use vehicle, as standing periods dramatically shorten battery life, and a tired battery can produce erratic electronic behaviour on a Mercedes of this complexity. Given the advisories issued on the 2026 test, the immediate priority on inspection is the four tyres, particularly the fronts where inner-edge wear has been observed. On a test drive, listen for any clonking or knocking from the front suspension over speed bumps or uneven surfaces, which would indicate worn bushes, drop links, or top mounts consistent with the type of uneven tyre wear recorded. Pay close attention to steering behaviour; any vagueness, pulling to one side, or tramlining would suggest the wheel alignment has been compromised by suspension wear. Inspect the rear coil spring area for any sagging of the vehicle's rear ride height, as a fractured spring is sometimes accompanied by weakness in the opposing spring, and check that the headlamp output is now restored and that both lamps produce an even, well-defined beam pattern without condensation behind the lens. Beyond the recorded defects, a thorough physical inspection is warranted given the low usage profile. Examine the brake discs for surface corrosion and pitting, particularly around the outer edges, and verify that the calipers release cleanly rather than binding, which can manifest as a hot wheel hub after driving or uneven brake pad wear. Check the condition of all tyre sidewalls for age-related perishing and cracking, as tyres older than seven years from manufacture should be replaced regardless of tread depth, and confirm the production date by inspecting the DOT markings. Verify that the service book contains stamps at appropriate intervals and inspect the level and condition of engine oil, coolant, brake fluid, and power steering fluid, requesting evidence of any recent changes. Finally, ensure that the folding roof mechanism operates fully and latches securely in both closed and stowed positions, as hydraulic roof actuators and seals are known wear items on the SLK and can be costly to refurbish.