2025 BYD Seal U Boost DM-I Phev Auto 1.5L Hybrid electric (clean) · SC75 DGV

No DVSA MOT test history is currently available for this 2025 BYD SEAL U BOOST DM-I PHEV AUTO, which is consistent with its registration as a 2025 model year vehicle. Vehicles in the United Kingdom are not legally required to undergo their first MOT test until they reach three years of age, so the absence of an MOT record at this stage is entirely normal and should not be interpreted as a cause for concern. Without any prior test data, advisories, or failure points, it is not possible to evaluate the vehicle against an established maintenance trend, but this does provide a clean baseline from which to commence assessment. The prospective buyer should view this as an opportunity to conduct a thorough physical and mechanical appraisal prior to purchase rather than depending on MOT history for assurance of roadworthiness. With no recorded MOT mileage history available and the vehicle having been registered as a 2025 plate, it is currently difficult to establish a precise annual usage figure. As a plug-in hybrid model, the BYD SEAL U DM-i is likely to cover a mixture of shorter urban journeys on electric power and longer distances using its petrol range extender, which can have particular implications for mechanical wear. Low annual mileage, particularly when dominated by short trips, can lead to issues such as petrol engine oil degradation, infrequent exhaust system runs causing condensation accumulation, and reduced 12V battery cycling, which can compromise battery longevity. Conversely, if the vehicle has accumulated higher mileage predominantly on motorway runs, attention should turn to brake disc wear, tyre condition, and suspension component fatigue. Without mileage data, it is prudent for the buyer to verify the current odometer reading against the service record to ascertain the average annual mileage. Given the absence of an MOT test history, the buyer should place particular emphasis on a comprehensive pre-purchase inspection conducted either personally or by a qualified independent technician. For a vehicle of this age and type, particular attention should be paid to the high-voltage battery state of health and any diagnostic trouble codes stored within the plug-in hybrid powertrain management system, which can be interrogated using manufacturer-specific equipment. The condition of the 12V auxiliary battery should be checked, as modern vehicles are sensitive to voltage irregularities, and the charging cable, domestic socket adaptor, and Type 2 connector should be inspected for damage. Tyres should be examined for uneven wear patterns, sidewall cracking, or perishing consistent with age even if tread depth remains adequate, and the alloy wheels should be checked for kerbing damage that may indicate hasty driving. Brake discs and calipers should be inspected for any signs of corrosion, seizing, or binding, particularly if the vehicle has been stood for extended periods, and the brake fluid should be tested for moisture content, as hygroscopic degradation occurs over time regardless of mileage. Further inspection should focus on the suspension and underbody, where coil springs, anti-roll bar links, and suspension bushes should be examined for any play, splitting, or corrosion. As this is a relatively new vehicle, structural integrity concerns should be minimal, but a thorough underbody inspection remains advisable to identify any damage from speed humps or poor road surfaces. All exterior and interior lights, including the distinctive LED light signatures, should be verified for full operation, along with the infotainment system, reversing camera, parking sensors, and driver assistance functions such as adaptive cruise control and lane keeping, which are typically fitted to this model. The hybrid system should be tested by initiating a cold start to assess engine cranking behaviour and listening for any irregular idling, unusual vibrations, or warning lights on the dashboard. Finally, the buyer should request evidence of the full BYD main dealer service history, ensuring that all required plug-in hybrid system checks, coolant replacement intervals, and software updates have been completed within the manufacturer-specified schedule.