2020 Mercedes-Benz E 300 AMG Line Premium D Auto 1.9L Diesel · BEE 11A

The vehicle’s most recent MOT test on 2025-09-16 confirms it passed without defects, though it was retested just six days earlier after a failure at 21,172 miles. This pattern of consecutive tests suggests either a rushed or precautionary approach to compliance rather than a genuine mechanical issue. The absence of recurring advisories or defects across all tests implies no persistent problems with suspension bushes, coil springs, binding calipers, or exhaust emissions—components that commonly fail on this model. However, the failure itself, despite no recorded issues, raises suspicion of a procedural oversight or a minor fault that slipped through initial inspection. The stability of the record suggests the vehicle has not experienced worsening mechanical trends, but the retest indicates a lack of thoroughness in the prior assessment. The recorded mileage of 21,204 miles at the latest test corresponds to an average of just 3,534 miles per year over six years, which is unusually low for a premium AMG model. This suggests either prolonged periods of inactivity or very light use, which could mean deferred maintenance rather than genuine wear. The gaps between tests—approximately 12,000 miles—are consistent, but the retest in September 2025 stands out as an anomaly. Without additional service records, it’s impossible to confirm whether critical intervals for fluid changes, timing belt inspections, or suspension servicing were adhered to. The low mileage could work in the vehicle’s favour for consumables like tyres and brakes, but it also implies potential neglect of less mileage-dependent systems, such as electrical components or cabin filters. Given the clean MOT history, a buyer should prioritise an in-person inspection of the suspension geometry, particularly the rear dampers and bushes, as these are prone to premature wear in low-mileage vehicles that may have been stationary for extended periods. The brakes, while not flagged, should be checked for uneven pad thickness or warped discs, especially if the vehicle has been stored with minimal use. The engine bay warrants scrutiny for fluid leaks, particularly around the oil cooler and power steering reservoir, as AMG models are susceptible to overheating if maintenance has been deferred. Structural corrosion, particularly around wheel arches and underbody, should be inspected despite the low mileage, as prolonged standing can accelerate rust formation. Finally, the electrical system—including the infotainment and charging ports—should be tested, as these components often degrade with age rather than mileage.