2025 BYD Sealion 7 Comfort EV Electricity · WD25 KBZ

At the time of writing, this 2025 BYD Sealion 7 Comfort EV has no recorded DVSA MOT test history, which is entirely expected and legally compliant for a vehicle of its age. Under current UK roadworthiness legislation, a vehicle does not require an MOT test until it reaches three years of age, meaning the first test for this car would not be due until 2028. Consequently, there are no recorded pass outcomes, advisories, or failure points to evaluate at this stage. While the absence of an MOT history prevents any trend-based assessment of mechanical deterioration, this is a normal administrative state for a near-new vehicle rather than a cause for concern in itself. The prospective buyer should therefore rely entirely on the manufacturer's new-car warranty coverage and the dealer's pre-delivery inspection records to establish the baseline condition of the vehicle. Because the mileage recorded against this vehicle is not available, it is not possible to calculate an accurate annual usage rate or to compare it meaningfully against the typical mileage profile of a comparable electric SUV. The Sealion 7 Comfort is a relatively new model on the UK market, and without access to digital odometer verification, the buyer should request the current mileage directly from the seller and cross-reference it against the service book, any available digital service history, and the date of first registration. For a 2025 model, an average annual mileage would typically fall somewhere between 8,000 and 12,000 miles, though EVs are sometimes subjected to lower mileages due to charging logistics or, conversely, higher mileages due to their suitability for fleet and commuter use. Any substantial gap between the recorded odometer reading and the expected average should prompt the buyer to clarify the circumstances of the vehicle's use, particularly whether it has been used for long-distance motorway mileage or predominantly short urban journeys, both of which carry different implications for high-voltage battery longevity and tyre wear patterns. Given the absence of MOT history and the impossibility of identifying recurring defects, the assessment must instead focus on age and usage-appropriate inspection guidance for an electric vehicle of this vintage. Although the Sealion 7 is unlikely to display significant age-related wear, the buyer should still inspect the tyres carefully for sidewall perishing and uneven tread wear, paying particular attention to the inner shoulder which can wear prematurely if the wheel alignment has been disturbed by kerbing. Brake discs and calipers on lightly driven EVs are particularly susceptible to corrosion and binding due to the regenerative braking system reducing friction brake usage, so each caliper should be checked for free movement, and the brake pedal should be tested for a firm, even feel with no shudder or pulling under braking. A test drive should also include a careful listen for any suspension clonks or knocking over speed humps and uneven surfaces, as well as an evaluation of steering precision and any vibration through the wheel at motorway speeds, which could indicate wheel balance, tracking, or alignment concerns. Finally, given that calendar-based fluid and component degradation applies even to low-mileage vehicles, the buyer should verify that the 12V auxiliary battery is in good health, as EV auxiliary batteries can fail prematurely if the vehicle is left standing for extended periods or subjected to very short usage cycles. The high-voltage battery state of health should be requested from the dealership in the form of a diagnostic report, and the vehicle's charging history, if available, should be examined to confirm balanced charging practices rather than frequent rapid DC charging, which can accelerate long-term battery degradation. Brake fluid should be inspected for colour and moisture content, as hygroscopic degradation occurs regardless of mileage, and the coolant system should be checked for leaks, low fluid levels, and evidence of recent servicing. The tyre pressure monitoring system sensors, windscreen for any stone chips, and all exterior lighting should also be confirmed as functional. Completing these physical and digital checks should provide a comprehensive picture of the vehicle's condition in lieu of any MOT history.