2020 Mercedes-Benz EQC 400 AMG Line Premium + 4M Electricity · GA54 NET

The defining mechanical story for this 2020 Mercedes-Benz EQC 400 is one of broadly stable roadworthiness punctuated by a single, isolated but severe failure event in mid-2024, alongside a persistent and recurring minor advisory concerning the front wiper blades. The most recent MOT on 10 August 2026 was a pass with only a minor advisory for the nearside wiper blade smearing, mirroring the exact same advisory that has appeared at every test since August 2023. Prior to this streak of minor cosmetic advisories, the vehicle was subjected to a Dangerous failure on 31 July 2024 involving fractured nearside and offside front road wheels and a nearside rear tyre with ply or cords exposed. The subsequent retest on 2 August 2024 returned a pass, with no further structural advisories logged in the intervening years, indicating that the wheel and tyre issues were addressed promptly and have not reappeared. With 61,013 miles recorded on a six-year-old vehicle, the EQC has accumulated roughly 10,169 miles annually, which is broadly typical for its age and usage class and does not suggest either prolonged standing or excessive high-mileage wear. There are no notable gaps in the MOT testing record, and the mileage progression between annual tests appears consistent with normal mixed-use driving, including urban and motorway mileage that would be expected for a premium electric SUV. Mechanically, this usage profile means the regenerative braking system, suspension components, and tyres should have experienced moderate but not extreme wear, and the high-voltage battery and drive units will have seen regular cycling rather than the degradation risks associated with long-term low use. Given the fractured front road wheels recorded at the 2024 Dangerous failure, particular attention should be paid during a test drive to any steering vibration, particularly at higher speeds or under braking, as residual imbalance or run-out in the front hubs can mimic the symptoms of a warped brake disc. Listen carefully for any clonking or knocking from the front suspension over uneven surfaces, as fractured wheels on an EV of this weight can transmit harsh loads into the suspension arms and bushes. Although no suspension advisories have been recorded since, the test drive should include firm braking from around 40 mph to check for pedal judder, and the car should be inspected on a ramp for any signs of fluid seepage from the front axle assemblies or uneven tyre wear that could indicate geometry issues following the wheel replacement. The recurring wiper blade smearing advisory across multiple consecutive tests is a minor cosmetic and visibility issue rather than a structural defect, but it does suggest that the wiper linkage or arm tension may be contributing to poor blade contact. On inspection, verify that both wiper arms lift cleanly from the windscreen and that the rubber blades are relatively fresh, as persistent smearing reduces visibility in heavy rain, particularly relevant given the vehicle's premium touring remit. Beyond the recorded items, the prospective buyer should confirm the current state of the OE-equivalent tyres, the condition of the alloy wheels for any curb damage that might have been masked by the 2024 wheel replacement, and request evidence of the work carried out to rectify the Dangerous defects, as the structural integrity of the front wheels was formally flagged as a safety risk at the time.