The BYD Seal 07 DM-i 1.5L 10.08 kWh (218 Hp) Plug-in Hybrid E-CVT is a compact sedan introduced by the Chinese automaker BYD in August 2024. Positioned as a technologically advanced and fuel-efficient option within the Seal 07 lineup, this variant combines a 1.5-liter internal combustion engine with an electric motor and a relatively small 10.08 kWh battery pack, offering both all-electric driving capability and extended range through its plug-in hybrid powertrain. The “DM-i” designation signifies BYD’s Dual Mode-i technology, prioritizing electric drive while utilizing the gasoline engine for range extension and supplemental power. Production is expected to continue through August 2025, catering primarily to the Chinese domestic market, though export potential exists.
Technical Specifications
| Brand | BYD |
| Model | Seal 07 |
| Generation | Seal 07 |
| Type (Engine) | DM-i 1.5L 10.08 kWh (218 Hp) Plug-in Hybrid E-CVT |
| Start of production | August, 2024 |
| End of production | August, 2025 |
| Powertrain Architecture | PHEV (Plug-in Hybrid Electric Vehicle) |
| Body type | Sedan |
| Seats | 5 |
| Doors | 4 |
| Fuel consumption (economy) – combined (NEDC) | 3.4 l/100 km (69.2 US mpg, 83.1 UK mpg, 29.4 km/l) |
| Fuel Type | Petrol / electricity |
| Acceleration 0 – 100 km/h | 8.5 sec |
| Acceleration 0 – 62 mph | 8.5 sec |
| Acceleration 0 – 60 mph | 8.1 sec |
| Maximum speed | 185 km/h (114.95 mph) |
| Emission standard | China VI |
| Gross battery capacity | 10.08 kWh |
| Battery technology | Lithium iron phosphate (LiFePO4) |
| Battery location | Below the floor |
| All-electric range (CLTC) | 70 km (43.5 mi) |
| Electric motor power | 218 Hp |
| Electric motor Torque | 260 Nm (191.77 lb.-ft.) |
| Electric motor location | Front axle, Transverse |
| Electric motor type | Synchronous |
| System power | 218 Hp |
| System torque | 260 Nm (191.77 lb.-ft.) |
| Power | 101 Hp |
| Torque | 126 Nm (92.93 lb.-ft.) |
| Engine layout | Front, Transverse |
| Engine Model/Code | BYD472QA |
| Engine displacement | 1498 cm3 (91.41 cu. in.) |
| Number of cylinders | 4 |
| Engine configuration | Inline |
| Number of valves per cylinder | 4 |
| Fuel injection system | Multi-port manifold injection |
| Engine aspiration | Naturally aspirated engine |
| Valvetrain | DOHC, VVT |
| Fuel tank capacity | 70 l (18.49 US gal | 15.4 UK gal) |
| Length | 4980 mm (196.06 in.) |
| Width | 1890 mm (74.41 in.) |
| Height | 1495 mm (58.86 in.) |
| Wheelbase | 2900 mm (114.17 in.) |
| Front track | 1640 mm (64.57 in.) |
| Rear (Back) track | 1650 mm (64.96 in.) |
| Minimum turning circle (turning diameter) | 11.2 m (36.75 ft.) |
| Drivetrain Architecture | The Internal combustion engine (ICE) and electric motor drive the front wheels of the car with the ability to work in full electric or mixed mode. |
| Drive wheel | Front wheel drive |
| Number of gears and type of gearbox | automatic transmission E-CVT |
| Front suspension | Independent type McPherson |
| Rear suspension | Independent multi-link suspension |
| Front brakes | Ventilated discs |
| Rear brakes | Disc |
| Assisting systems | ABS (Anti-lock braking system) |
| Steering type | Steering rack and pinion |
| Power steering | Electric Steering |
| Tires size | 225/55 R17 |
| Wheel rims size | 17 |
Powertrain & Engine Architecture
The Seal 07 DM-i utilizes BYD’s DM-i hybrid system, which centers around a 1.5-liter naturally aspirated four-cylinder gasoline engine (BYD472QA) paired with a single electric motor. The engine produces 101 horsepower and 92.93 lb.-ft. of torque. The electric motor contributes 218 horsepower and 191.77 lb.-ft. of torque, resulting in a combined system output of 218 horsepower. The engine employs multi-point fuel injection and a double overhead camshaft (DOHC) valvetrain with variable valve timing (VVT). A key component is the E-CVT (electronically controlled continuously variable transmission), which doesn’t have traditional gears but simulates gear changes for a smoother driving experience. The 10.08 kWh lithium iron phosphate (LiFePO4) battery pack is positioned under the floor, contributing to a lower center of gravity and improved handling. The DM-i system is designed to prioritize electric drive whenever possible, switching to the gasoline engine for range extension or when higher power demands are needed.
Driving Characteristics
The 1.8L Automatic configuration delivers a comfortable and efficient driving experience. Acceleration from 0-60 mph takes approximately 8.1 seconds, and 0-100 km/h in 8.5 seconds. The E-CVT provides seamless acceleration, and the electric motor provides instant torque, making it responsive in city driving. In electric mode, the vehicle operates silently and offers brisk acceleration. When the gasoline engine engages, the transition is generally smooth and unobtrusive. Compared to higher-output versions of the Seal 07, this variant prioritizes fuel economy over outright performance. The E-CVT is tuned for efficiency, which can sometimes result in a less engaging driving experience for enthusiasts. The front-wheel-drive configuration provides adequate traction in most conditions, but may exhibit some torque steer under hard acceleration.
Equipment & Trim Levels
The standard equipment for the Seal 07 DM-i 1.5L typically includes features such as LED headlights, a large touchscreen infotainment system, a digital instrument cluster, automatic climate control, and a suite of advanced driver-assistance systems (ADAS) including adaptive cruise control, lane keeping assist, and automatic emergency braking. Interior upholstery is generally cloth or synthetic leather, with higher trims offering genuine leather options. Optional extras may include a panoramic sunroof, premium audio system, ventilated front seats, and a 360-degree camera system. The specific trim levels and available options vary depending on the market and package selected.
Chassis & Braking
The Seal 07 DM-i features an independent McPherson strut suspension in the front and an independent multi-link suspension in the rear, providing a comfortable ride and good handling characteristics. Ventilated disc brakes are used on the front wheels, while solid disc brakes are used on the rear. The vehicle is equipped with an anti-lock braking system (ABS) and electronic stability control (ESC) as standard safety features. Electric power steering provides light and precise steering feel. The vehicle rides on 17-inch alloy wheels with 225/55 R17 tires.
Market Reception & Comparison
The BYD Seal 07 DM-i 1.5L has been well-received in the Chinese market for its combination of fuel efficiency, technology, and value. Critics have praised its comfortable ride, spacious interior, and advanced features. Compared to other trims in the Seal 07 lineup, this variant offers a more affordable entry point while still providing a compelling plug-in hybrid experience. Its fuel economy of 3.4 l/100 km (69.2 US mpg) is a significant advantage over conventional gasoline-powered vehicles. Reliability reports are still emerging, but BYD has a growing reputation for building durable and dependable vehicles.
Legacy
The BYD Seal 07 DM-i 1.5L represents a significant step forward in the development of plug-in hybrid technology. Its efficient powertrain, advanced features, and competitive pricing make it an attractive option for consumers seeking a fuel-efficient and environmentally friendly vehicle. The long-term reliability of the DM-i powertrain remains to be seen, but BYD’s commitment to innovation and quality suggests that this variant will become a popular choice in the used car market in the years to come. The use of LiFePO4 battery technology is also noteworthy, as it offers improved safety and longevity compared to traditional lithium-ion batteries.
