2025 BYD Seal U Comfort DM-I Phev Auto 1.5L Hybrid electric · FP75 LBJ

The 2025 BYD SEAL U COMFORT DM-I PHEV does not yet have any recorded DVSA MOT test history, which is consistent with its registration as a 2025 model year vehicle. As MOT testing becomes a legal requirement from the third anniversary of first registration in the United Kingdom, this particular car will not be due for its first statutory roadworthiness examination until 2028. Consequently, there are no official pass, fail, or advisory records against which to gauge a maintenance trend. From a buyer protection standpoint, this absence of MOT data is entirely normal for a nearly new vehicle and should not, in itself, be treated as a negative indicator; rather, it places greater emphasis on verifying the manufacturer's warranty, build quality consistency, and dealer service records prior to purchase. Because the recorded mileage has been listed as unknown, it is not currently possible to benchmark annual usage against the typical averages for the BYD SEAL U platform. PHEV variants of this class are often purchased for mixed urban and commuter use, with annual mileages frequently ranging between 8,000 and 15,000 miles depending on whether the owner maximises the electric-only range. Should the mileage transpire to be unusually low, prospective buyers should be alert to potential issues arising from prolonged standing, including tyre flat-spotting or sidewall perishing, brake disc corrosion and caliper seizure, and degradation of lubricants and coolants through calendar ageing rather than distance. Conversely, if the mileage is significantly higher than expected, particular attention should be given to the condition of the high-voltage battery pack, the integrity of the charging system, and the wear rate of components such as the tyres and brake friction material. Given the absence of MOT advisories or defect data, a physical inspection becomes especially important. Check all four tyres, including the spacesaver if fitted, for manufacturer date codes exceeding four to five years, sidewall cracking, and uneven wear patterns which could indicate misalignment or suspension irregularities. Inspect the brake discs and pads through the wheel apertures for any excessive corrosion or lipping, and verify that the electronic parking brake releases cleanly without any binding or scraping noises. Open the bonnet and examine the high-voltage cooling system, the conventional 12V auxiliary battery, and all fluid reservoirs for correct levels and appropriate colour; PHEV powertrains can suffer from coolant degradation even at low mileages, and the 12V battery is known to be a recurring failure point on modern BYD vehicles, often manifesting as infotainment or start-up faults. On a test drive, pay close attention to any warning messages on the digital dashboard, particularly relating to the hybrid powertrain, battery management, or driver assistance systems. Listen for suspension knocks over uneven surfaces, which could point to early wear of the bushes or top mounts despite low mileage, and feel for any vibration through the steering wheel that might suggest wheel balance issues or warped brake discs from standing. Confirm that the transition between electric and petrol propulsion is seamless, that the regenerative braking functions as expected, and that all driver aids and cameras calibrate correctly. Finally, verify with the supplying dealer that any software updates issued by BYD have been applied, that the high-voltage battery state of health certificate is available, and that the vehicle history check shows no outstanding manufacturer recalls. A pre-purchase inspection by a BYD-approved technician is strongly recommended to give a complete picture of mechanical and electrical condition given the absence of MOT data.