The 'Seal' name is typically used on BYD's compact fastback/crossover line; seeing 'Hybrid Petrol' listed is unusual for the Seal in Europe, so verify the actual drivetrain on this car. BYD tend to offer long battery-related warranties, but exact cover and transferability vary by market — get the warranty paperwork for the hybrid battery and drivetrain. Dealer network and parts support in Ireland are improving but still not as extensive as established Japanese brands, and hybrid systems rely on software updates, so ask for software/service records.

• Confirm the actual drivetrain: locate a petrol filler cap and see if a charge port is present, and check V5/service paperwork to verify 'hybrid petrol' versus battery-electric.
• Hybrid battery warranty and health: get written warranty details and, if possible, a battery state-of-health/readout from dealer diagnostics.
• Automatic hybrid transmission behaviour: test-drive for smooth take-up, no hesitation or warning lights, and ask for any software/ECU update history for the hybrid control unit.
• Regenerative braking and brake condition: check regen levels work as expected and brakes show normal wear (hybrids often have light pad wear but odd feel can indicate issues).
• 12V electrical health and infotainment/vehicle software: confirm no persistent error messages, that displays and hybrid-specific gauges behave normally, and that the dealer has applied recent OTA/flash updates if available.