2025 BYD Seal U Comfort DM-I Phev Auto 1.5L Hybrid electric · WM75 DVR

As of the date of this assessment, there is no recorded DVSA MOT history for this 2025 BYD SEAL U COMFORT DM-I PHEV. It is important to note that vehicles in the United Kingdom are not legally required to undergo an MOT test until they reach three years of age. Given that this vehicle is a 2025 model, it falls squarely within the exemption window, and the absence of test data does not indicate neglect or mechanical defect. From an evaluation standpoint, there is simply no historical failure or advisory data against which to judge a maintenance trend, leaving the prospective buyer without the usual longitudinal insight into component wear, recurring advisories, or structural corrosion. This places greater emphasis on physical inspection and verification of manufacturer servicing records to compensate for the lack of statutory testing data. The supplied mileage context is listed as unknown, which precludes any direct comparison between annual usage and the vehicle's age. As a nearly new vehicle still within its first registration year, accumulated mileage would generally be modest, but any significant deviation from expected low figures could indicate extended standing periods, which carry their own mechanical implications. Conversely, high mileage accumulation within the first year might suggest intensive use, such as long-distance commuting or commercial application, potentially accelerating wear on friction materials and tyres. Regardless of the actual figure, a buyer should request documented mileage from the V5C logbook and cross-reference it with any available service invoices to ensure consistency. Any unexplained gaps or sudden jumps in recorded mileage should be scrutinised carefully, as they may suggest clock tampering or odometer irregularities. Because no MOT advisories are available to guide specific component inspection, the buyer must adopt an age-appropriate and calendar-based approach to evaluating this PHEV. Tyres, even with low wear on the tread, may exhibit sidewall perishing or cracking if the vehicle has been stationary for prolonged periods or stored in fluctuating temperatures; sidewalls should be inspected closely for hairline fissures. Standing corrosion on brake discs is highly probable, particularly if the vehicle has seen limited use or has been exposed to damp coastal environments, leading to surface rust that can cause brake shudder or binding calipers upon initial application. The 12V auxiliary battery and the high-voltage traction battery should be health-checked via the onboard diagnostic system to confirm state of charge and any fault codes, while ensuring that all manufacturer software updates have been applied. Drive the vehicle on a mixed route, listening for suspension clunks over uneven surfaces, testing for smooth regenerative and friction braking transitions, and verifying that the hybrid system engages seamlessly between petrol and electric propulsion. Finally, time-based fluid servicing remains critical even in a low-mileage PHEV. Brake fluid is hygroscopic and degrades on a calendar basis, typically requiring replacement every two to three years regardless of mileage, and any service book omission should prompt immediate attention. Coolant, both for the internal combustion engine and the electric drive system, should be inspected for proper concentration and absence of contamination, while the inverter and reduction gearbox oil should be checked for service intervals specified by BYD. Inspect the charging port, high-voltage cabling, and underbody protection panels for any signs of damage from kerbing or debris, and examine the exhaust system for corrosion at joints and hangers, as even low-mileage vehicles can suffer exhaust degradation through standing exposure to road salts. A professional pre-purchase inspection by a BYD-approved technician, including a diagnostic scan and a battery health report, is strongly recommended given the absence of MOT history and the relative complexity of modern plug-in hybrid drivetrains.