2025 BYD Sealion 7 Design EV AWD Electric · YP75 DYY

The DVSA records show no MOT history for the 2025 BYD Sealion 7 Design EV AWD, meaning there is no documented test outcome to reference. In the absence of any recorded pass, failure or advisory, it is impossible to gauge whether the vehicle’s maintenance pattern has been stable, deteriorating or improving; the lack of data simply leaves the maintenance trend indeterminate. Mileage for this vehicle is also not supplied, so a direct comparison with its 2025 model year cannot be made. Assuming the car is approximately one year old, a typical annual mileage for a privately‑used electric saloon would lie in the range of 8 000 to 12 000 miles. If the actual mileage is considerably lower, the car may have spent a substantial period on a stand, which can lead to tyre sidewall perishing, brake disc surface corrosion and potential battery cooling‑system stagnation. Conversely, if the odometer reads a high figure for a single year, accelerated wear on the drive‑unit bearings, suspension bushings and tyre tread would be expected and should be scrutinised. For a prospective buyer, the first point of inspection should be the tyre condition: examine tread depth, uniformity of wear and, crucially, the sidewalls for cracking or dry‑rot that can develop even on low‑mileage tyres after a few years. Verify that the tyre pressure monitoring system is functional and that the tyres are of the correct specification for the EV’s torque output. Next, assess the high‑voltage battery health by requesting a recent state‑of‑charge and health report from a BYD service centre; look for any degradation beyond the normal 2‑3 % per year and ensure that the vehicle’s software is up‑to‑date, as firmware revisions often address range optimisation and thermal management. Finally, conduct a thorough visual and functional check of the suspension components, brake system and bodywork. Inspect the coil springs, shock absorbers and suspension bushes for any signs of leakage, corrosion or excessive play, remembering that the additional weight of the battery pack places higher loads on these parts. Test the regenerative braking operation and listen for any abnormal shudder or pulsation that could indicate worn brake discs or binding calipers, especially if the car has been idle for long periods. Examine the under‑body for rust, particularly around the wheel arches and rear subframe, and confirm that all exterior lighting, wipers and climate‑control functions operate correctly. A complete service history, even if not recorded by MOT, will give further confidence that the vehicle has been maintained in line with BYD’s recommended intervals.