2018 Mercedes-Benz E 1.9L Diesel · G1 SCH

The most recent MOT test passed on 1 December 2025 with no defects recorded, following a failure regarding an inoperative engine malfunction indicator lamp. Looking at the broader maintenance trend, the vehicle shows signs of reactive maintenance rather than a consistent preventative regime. The presence of a dangerous failure in November 2024 due to a seriously weakened rear brake disc is a significant concern, indicating that critical safety components reached a point of critical failure before being addressed. While the recent pass suggests the immediate mechanical and electrical issues have been rectified, the history of failures suggests the vehicle may have been subject to periods of neglect. With 45,419 miles recorded over approximately eight years, the vehicle has averaged roughly 5,677 miles per year. This is considerably lower than the national average, indicating light usage or extended periods of standing. While low mileage typically suggests less mechanical wear on the engine, gearbox, and drivetrain, it introduces specific risks associated with infrequent use. Low-mileage vehicles are more prone to fluid degradation, battery discharge, and the perishing of rubber components such as tyres and suspension bushes, which can occur regardless of the distance travelled. During a test drive, pay close attention to the suspension and braking systems. Previous advisories for play in the suspension arm ball joints in 2022 and 2023 mean you should listen for any knocking or clunking sounds when navigating uneven surfaces or during low-speed steering manoeuvres. Given the dangerous failure of the rear brake disc, ensure the braking feels consistent and that there is no pedal pulsation or shuddering, which could indicate warped discs or binding calipers. Furthermore, confirm that the engine malfunction indicator lamp is fully operational and that no warning lights appear on the instrument cluster, as the recent failure suggests potential electrical or sensor-related issues. Due to the low annual mileage, a thorough physical inspection of the tyres is essential. Check the sidewalls for any signs of cracking or perishing, as rubber degrades with age even if tread depth remains high. You should also inspect the brake discs for heavy corrosion or uneven wear, which often results from a vehicle standing for long periods. It is highly recommended to verify the service history to ensure that maintenance has been carried out on a calendar basis for fluids such as brake fluid, coolant, and engine oil, rather than solely relying on mileage intervals. Finally, check the 12V battery health, as infrequent driving can lead to sulphation and reduced cranking power.