2012 Mercedes-Benz SL 5.5L Petrol · NT 5447

The most recent MOT, carried out on 6 January 2026, was passed but recorded two advisories concerning slight play in the near‑side and off‑side front lower suspension arm ball joints. The same advisories appeared in the 2025 MOT, while the three preceding tests (2024, 2023 and 2021) reported no defects. This pattern suggests a stable overall maintenance record with no outright failures, yet a persistent wear issue on the front lower ball joints that has not yet progressed to a failure condition. The odometer reads 51,078 miles for a vehicle first registered in 2012, giving an average annual distance of roughly 3,650 miles. This is considerably below the typical UK usage of 7‑10 000 miles per year and points to either very light daily use or extended periods of inactivity. Low mileage reduces cumulative wear on drivetrain components, but the age of the car means that rubber components, seals and fluids may have deteriorated regardless of distance travelled, and corrosion can develop on parts that have sat idle for long intervals. When inspecting the car, pay particular attention to the front lower suspension arm ball joints. Look for any looseness when the front wheels are rocked vertically and listen for clunking or knocking noises over bumps, especially on uneven road surfaces. Examine the surrounding bushings for cracks or excessive movement, and check the wheel alignment by observing whether the vehicle pulls to one side or the steering wheel is off‑centre when travelling straight. If the ball joints exhibit increased play or any signs of corrosion, it would be prudent to have them replaced soon, as failure could lead to loss of steering control and uneven tyre wear. Beyond the suspension, conduct a thorough age‑related check. Verify that the tyre sidewalls are free from cracking, dry rot or hardening; even with low miles, tyres older than six years should be considered for replacement. Inspect the 12‑volt battery for sulphation and test its cranking voltage, as prolonged storage can diminish capacity. Examine brake discs for surface rust, scoring or glazing, and ensure the calipers move freely without binding. Drain and replace engine oil, coolant and brake fluid if service records are absent, since fluids degrade over time. Finally, look for any signs of corrosion on the chassis, exhaust system and under‑body panels, and confirm that the service book contains regular oil changes and any recommended interval services for a vehicle of this age.