2003 Mercedes SLK 2.0L Petrol · DY03 AKP

A notably sparse defect history defines this 2003 Mercedes SLK, with the recorded DVSA MOT tests between 2022 and 2024 showing only pass and fail entries rather than the granular advisory detail typically seen on vehicles of this age. The most recent test on 17 October 2024 recorded a clean pass with no defects recorded, following a fail at the same centre just three days earlier on 14 October 2024, also with no defects recorded. This pattern of a near-identical pass and fail within the same month, without any defect notes, strongly suggests that an administrative or tester-related issue caused the earlier failure rather than a genuine mechanical defect — for instance, a re-test booked before the original failure had been properly logged, or a tyre specification query. The wider trend over the three years of recorded testing is one of broadly stable roadworthiness, with passes in October 2022 and October 2023 bookending the 2023 fail and the late-2024 outcome. With 67,619 miles accumulated over approximately 23 years, this SLK has averaged around 2,940 miles per year, which is considerably below typical usage for a vehicle of this vintage and points to extended periods of light use or prolonged standing. Such low annual mileage reduces wear on major drivetrain and braking consumables but introduces the well-documented risks associated with cars that spend long stretches stationary, particularly around ageing rubber components, dried lubricants in brake calipers and wheel bearings, and moisture accumulation in fluids. There is also a notable gap in the recorded MOT history between October 2017 and October 2022, which suggests the vehicle may have been off the road — declared SORN, used purely off-road, or stored — for several consecutive years during the middle of the last decade, and any extended lay-up of that duration warrants careful scrutiny of seals, gaskets, and corrosion-prone areas. For a prospective buyer, the lack of any advisory detail across five recorded tests is unusual for a 23-year-old Mercedes and means the inspection cannot rely on the MOT history to highlight emerging wear items, so a thorough pre-purchase inspection is particularly important. Given the low mileage and probable extended storage period, particular attention should be paid to the condition of the coil springs, suspension bushes, and anti-roll bar linkages — Mercedes of this era are known for perished or sagging rubber components that may not show up in MOT testing until they have deteriorated further. On a test drive, listen for clonking or knocking noises from the front suspension over uneven surfaces, signs of binding brake calipers when pulling away from rest, and any uneven pulling under braking that could indicate a seized caliper slide pin. The hydraulic roof mechanism, a defining feature of the SLK, should also be exercised fully on a level surface to confirm smooth operation, as roof hydraulic accumulators and seals are prone to leaks on cars of this age and any standing periods can accelerate seal deterioration. Finally, while the MOT record is reassuringly clean, the absence of recorded advisories on a car of this age should be treated with a degree of caution rather than complacency. A pre-purchase inspection by a specialist familiar with R170 Mercedes SLK models would be strongly advisable, with particular focus on underbody corrosion, the rear subframe mounting points, brake pipe condition along the chassis, and evidence of any oil leaks from the engine and transmission. Checking for any uneven tyre wear, inspecting the condition of the coolant and brake fluid for age-related degradation, and confirming that the vehicle has received regular annual servicing despite the low mileage would all help establish whether the low annual accumulation reflects genuine light use or simply periods of neglect punctuated by minimal trips. Taken together, the clean MOT ledger and modest mileage present a vehicle that is mechanically promising on paper, but one where the true condition will only be revealed through hands-on specialist inspection.