2024 BYD Seal U Boost DM-I Phev Auto Hybrid electric (clean) · BB74 BYD

This BYD SEAL, registered in 2024, presents a critical gap in its maintenance documentation, as no MOT history exists to assess its roadworthiness or service compliance. Without prior test records, there is no evidence of how the vehicle has been maintained, nor can we verify whether critical components—such as the hybrid battery system, high-voltage wiring, or suspension subframes—have been inspected or replaced. The absence of even a single MOT pass or fail means the vehicle’s structural integrity, emissions compliance, and core safety systems remain unvalidated. Buyers should treat this as a red flag, as the lack of documentation suggests either a first-time registration or deliberate concealment of service history, both of which raise significant concerns. Mileage data is entirely absent, leaving no way to evaluate whether the vehicle has been driven sparingly or excessively for its age. A 2024 model should have undergone at least one MOT by now, given the standard three-year interval between tests. The absence of any recorded mileage also prevents comparison with industry norms for hybrid vehicles, where battery degradation and regenerative braking wear can accelerate if the car has been driven aggressively. Without this baseline, it is impossible to determine whether the vehicle has been stored, lightly used, or subjected to heavy urban or motorway use, all of which would impact components like the hybrid battery, suspension bushes, and regenerative braking systems. Given the complete lack of MOT history, an immediate priority for any buyer would be a thorough inspection of the hybrid battery system, including its cooling unit and high-voltage connections, as these are common failure points in PHEVs and often require specialist diagnostics. The suspension, particularly the coil springs and bushes, should be checked for uneven wear or corrosion, as these components degrade rapidly in stop-start traffic. Binding brake calipers or warped discs—common in hybrid vehicles due to regenerative braking—must also be verified, as these can lead to uneven tyre wear or complete brake failure. Structural corrosion, particularly around the wheel arches and subframe, should be inspected, as this is often overlooked in newer models but can compromise safety. Finally, the exhaust emissions system, including the catalytic converter and particulate filter, should be tested for clogging or damage, as these are frequently flagged in MOT failures for hybrids.