2006 Mercedes-Benz SLK 3.0L Petrol · W300 AND

The 2006 Mercedes SLK passed its most recent MOT on 8 January 2026 at 109,845 miles, leaving it roadworthy but with active advisories that point to a slowly worsening maintenance trend. The tester flagged an oil leak not deemed excessive, a corroded nearside rear brake pipe coated in grease, and offside front service brake binding. These faults follow a clean 10 February 2025 pass at 106,907 miles, yet that test came only two days after a 8 February 2025 failure for offside front track rod end play and a dead nearside rear stop lamp. The pattern shows minor defects creeping in after a long fault-free spell. Mileage sits low for a twenty-year-old car at 109,845 total, averaging roughly 5,492 per year. The record reveals an eleven-month gap between the 2021 and 2024 tests, with only 170 miles added across that period, then just 34 miles by January 2024 and 2,038 by February 2025. Such low, sporadic use suggests the car stood idle for long stretches, a habit that accelerates rubber perishing, brake corrosion, and fluid degradation despite low wear on drivetrain components. A buyer should inspect the offside front brake for binding calipers or seized sliders, as the January 2026 test repeated the fault from earlier checks. The nearside rear brake pipe needs physical examination for external corrosion under the grease covering, since hidden pitting can breach the line. Verify the track rod end was properly replaced after the February 2025 failure and check all stop lamps operate. The oil leak demands a underside inspection to trace source and volume, likely from rocker cover or sump seals hardened through inactivity. Given the standing periods, assess suspension bushes and tyres for cracking, and confirm brake discs are free of rust pitting before committing to purchase.