2009 Mercedes-Benz SLK 1.8L Petrol · GU09 YUL

The 2009 Mercedes-Benz SLK presents as roadworthy with a stable maintenance trend, confirmed by the most recent DVSA test on 29 January 2026 at 78,050 miles which recorded no defects. The prior three annual tests, on 3 February 2025 at 76,281 miles, 5 February 2024 at 74,859 miles, and 10 February 2023 at 73,025 miles, also passed with no advisories. A single failure on 25 January 2023 at 73,021 miles shows no recorded defects, indicating an administrative or unlogged correction rather than a mechanical fault. The ownership pattern reflects consistent, light use with no worsening conditions across the visible record. Annual mileage averages 4,591 against the vehicle's 17-year life, a low figure for its age. The gap between the January 2023 failure and the February 2023 pass covers only four miles, suggesting the car was promptly retested after a minor rectification. From February 2023 to January 2026 the SLK added just 5,025 miles, roughly 1,675 per year. Such low accumulation implies extended standing periods, which on a 2009 convertible raises the risk of perished rubber seals, flat-spotted tyres, and stagnant brake calipers despite the clean MOT trail. The absence of advisories on suspension bushes, coil springs, brake discs, or corrosion across four passed tests points to either careful storage or superficial testing. A buyer should still inspect the retractable roof mechanism and hood drainage channels, common failure points on SLK models of this era. Check the underside for structural rust on subframes and the rear axle, as MOT testers often miss early corrosion on low-mileage cars presented in dry conditions. Verify the brake calipers for binding after the long idle periods implied by the mileage. Examine tyre sidewalls for cracking from age rather than wear, and confirm the exhaust emissions remain within limits given the infrequent running. The record shows no recurring mechanical faults, but the low use demands a physical inspection of consumables and structural integrity before purchase.