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BYD Seal U: plug-in hybrid, trims and what to know
BYD Seal U — a mid-sized SUV, to be sold in Europe from 2024 as a plug-in hybrid DM-i. We look at the gearbox, trims, comfort features and what to check when buying a used Seal U.
Seal U in brief
Seal U is BYD's mid-sized SUV, sold in China as the Song Plus. In Europe, it's best known as the Seal U DM-i — a plug-in hybrid that combines a petrol engine with a battery and electric motor.
The interior stands out with a large, rotatable central screen, and primary functions are controlled through it. Since the model has only recently hit European roads, the used market is still small, and mileages are low.
Gearbox and battery
DM-i stands for 'Dual Mode intelligent'. The system works so that most of the time the car drives on electric power, with the petrol engine kicking in for faster driving or when the battery is depleted. BYD's 'Blade' battery is used.
The electric motor can cover several dozen kilometres, and the total range with a full tank and full battery is significantly higher. Battery capacity and power vary depending on the version, so check the specific car's details.
Daily driving
For city and short trips, the car can mostly be driven on electric power alone, charging at home each day. On long journeys, the petrol engine cuts in and range isn't an issue.
Regularly charging the car keeps running costs lower.
What to check when buying a used Seal U
Request battery condition data, charging history, and check if charging via the socket works. Verify if the manufacturer's warranty remains and if it is transferable to the new owner.
Test the switch between the petrol and electric engines, multimedia, cameras, and assistance systems. Ensure the latest software updates are installed and that servicing is available in your region.
Trim levels
Names and equipment vary by market and year; we list the most commonly found trims in Europe.
Boost
BaseThe base trim with essential equipment.
- Often — a smaller battery
- Rotary central screen
- Basic safety equipment
Comfort
Mid-rangeWith more comfort equipment.
- Often — alloy wheels
- Often — leather or part-leather upholstery
- More driver assistance systems
Design
Top-tierThe full-fat version.
- Often — bigger wheels
- Often — panoramic roof
- Full complement of comfort and safety kit
Trim comparison
| Boost | Comfort | Design | |
|---|---|---|---|
| Who it suits | The budget option | For daily driving | For maximum comfort |
| Interior | More basic | More practical | More luxurious |
| Price in the used market (relatively) | €€ | €€ | €€€ |
Most buyers will be happy with the Comfort trim. It's worth considering if you want the full kit and caboodle.
Pros
- It works like an electric car for short distances
- No need to compromise on long journeys
- Spacious interior
- Generous standard equipment
Cons
- Short history in Europe, limited used supply
- Most functions controlled via the screen
- A more limited service network than traditional brands
Frequently asked questions
Can the Seal U drive purely on electric?
Yes, the DM-i version can cover several dozen kilometres on electric alone, then switches to the petrol engine.
Are the Seal U and Seal different?
Yes: the Seal is an electric sedan, while the Seal U is an SUV, sold in Europe as a plug-in hybrid.
Do you need to constantly charge the Seal U?
No, but regular charging keeps running costs down. Without charging, the car drives like a regular hybrid.
Updated 2026-10-17 · Trim levels and equipment vary by market and model year — check the equipment of the specific car. · Translated automatically
