2020 Mercedes-Benz CLA 220 AMG Line Premium D A 1.9L Diesel · ST70 RBY

The most recent MOT test conducted on 15 December 2025 resulted in a pass with no recorded defects. Evaluating the broader maintenance trend, the vehicle has experienced a period of instability characterized by a dangerous failure in late 2023 and a major failure in late 2024. However, the recent clean pass suggests that the identified issues, specifically the trailing arm bushes and tyre degradation, have been addressed. The maintenance pattern appears to be moving from a reactive state toward a more stable one, though the history of failures indicates that components are often pushed to their functional limits before being replaced. With 115,332 miles recorded, this Mercedes-Benz has been driven approximately 19,222 miles per year, which is high for a vehicle of this age. This level of usage suggests frequent long-distance or motorway driving. While this can be beneficial for diesel engine health by preventing excessive soot accumulation, it necessitates a more rigorous inspection of high-wear items. The mileage confirms that the vehicle is entering a phase where major mechanical components, such as the turbocharger, fuel system, and complex suspension assemblies, will require closer scrutiny due to cumulative fatigue and accelerated wear on consumables. During your test drive, pay close attention to the suspension and steering response. Given the previous major failure regarding the nearside rear trailing arm bush, you should listen for any knocking, clunking, or dull thudding sounds when driving over undulations or speed bumps. Such noises often signal worn suspension bushes or failing dampers. Additionally, monitor the tyre wear patterns; the history of edge wear on front tyres suggests that wheel alignment or camber settings may need verification. Inspect the tyres for any signs of uneven tread wear or sidewall damage, as the previous dangerous failure indicates a history of significant tyre neglect. You must also scrutinize the braking system and general mechanical integrity. The 2023 advisory regarding thin brake pads, combined with the high mileage, means you should check for any brake shudder under deceleration or any grinding noises that might indicate worn discs or pads. Ensure the brake pedal feels firm and consistent, without any sponginess that could suggest air in the system or fluid degradation. Finally, verify the service history to ensure that oil and filter changes have been performed at appropriate intervals to mitigate the effects of high mileage. Check the engine bay and underside for any evidence of oil or coolant leaks, and inspect the exhaust system for excessive corrosion or mounting issues.