The BYD Seal 07 DM-i 1.5Ti 29.46 kWh (272 Hp) Plug-in Hybrid E-CVT represents a significant offering in BYD’s expanding lineup, introduced with a facelift in August 2025. Positioned as a mid-range variant within the Seal 07 series, this model combines a 1.5-liter turbocharged gasoline engine with an electric motor and a 29.46 kWh battery pack, delivering both fuel efficiency and respectable performance. The Seal 07, a four-door sedan, is primarily targeted towards the Chinese domestic market, where demand for plug-in hybrid vehicles is rapidly increasing, offering a balance between the convenience of gasoline power and the environmental benefits of electric driving. This variant aims to appeal to buyers seeking a technologically advanced and practical vehicle for daily commuting and longer journeys.
Technical Specifications
| Brand | BYD |
| Model | Seal 07 |
| Generation | Seal 07 (facelift 2025) |
| Type (Engine) | DM-i 1.5Ti 29.46 kWh (272 Hp) Plug-in Hybrid E-CVT |
| Start of production | August, 2025 |
| Powertrain Architecture | PHEV (Plug-in Hybrid Electric Vehicle) |
| Body type | Sedan |
| Seats | 5 |
| Doors | 4 |
| Fuel consumption (economy) – combined (WLTC) | 4.49 l/100 km (52.4 US mpg / 62.9 UK mpg / 22.3 km/l) |
| Fuel Type | Petrol / electricity |
| Acceleration 0 – 100 km/h | 6.9 sec |
| Acceleration 0 – 62 mph | 6.9 sec |
| Acceleration 0 – 60 mph | 6.6 sec |
| Emission standard | China VI |
| Gross battery capacity | 29.46 kWh |
| Battery technology | Lithium iron phosphate (LiFePO4) |
| Battery location | Below the floor |
| All-electric range (CLTC) | 230 km (142.92 mi) |
| Electric motor power | 272 Hp |
| Electric motor Torque | 315 Nm (232.33 lb.-ft.) |
| Electric motor location | Front, Transverse |
| Electric motor type | Synchronous |
| System power | 272 Hp |
| System torque | 315 Nm (232.33 lb.-ft.) |
| Power | 156 Hp |
| Power per litre | 104.2 Hp/l |
| Torque | 225 Nm (165.95 lb.-ft.) |
| Engine layout | Front, Transverse |
| Engine Model/Code | BYD476ZQC |
| Engine displacement | 1497 cm3 (91.35 cu. in.) |
| Number of cylinders | 4 |
| Engine configuration | Inline |
| Number of valves per cylinder | 4 |
| Fuel injection system | Direct injection |
| Engine aspiration | Turbocharger, Intercooler |
| Valvetrain | i-VVT |
| Trunk (boot) space – minimum | 465 l (16.42 cu. ft.) |
| Fuel tank capacity | 50 l (13.21 US gal | 11 UK gal) |
| Length | 4995 mm (196.65 in.) |
| Width | 1900 mm (74.8 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 | 11.2 m (36.75 ft.) |
| Drivetrain | Front wheel drive |
| Gearbox | automatic transmission E-CVT |
| Front suspension | Independent type McPherson |
| Rear suspension | Independent multi-link suspension |
| Front brakes | Ventilated discs |
| Rear brakes | Disc |
| Steering type | Steering rack and pinion |
| Power steering | Electric Steering |
| Tires size | 225/50 R18 |
| Wheel rims size | 18 |
Powertrain & Engine Architecture
The heart of the Seal 07 DM-i is a combination of a 1.5-liter, four-cylinder turbocharged gasoline engine (BYD476ZQC) and a powerful electric motor. The engine produces 156 horsepower and 225 Nm (165.95 lb.-ft.) of torque, featuring direct fuel injection and intelligent Variable Valve Timing (i-VVT) for optimized efficiency. The electric motor, positioned transversely at the front of the vehicle, delivers 272 horsepower and 315 Nm (232.33 lb.-ft.) of torque. The system’s combined output is 272 horsepower. The E-CVT (Electronically controlled Continuously Variable Transmission) is a key component, acting as a sophisticated power-split device that seamlessly blends the output from the engine and motor. Unlike traditional CVTs, the E-CVT doesn’t rely on belts and pulleys; instead, it utilizes a planetary gearset to provide smooth, stepless acceleration. The 29.46 kWh lithium iron phosphate (LiFePO4) battery pack is located under the floor, contributing to a low center of gravity and maximizing interior space. This battery allows for a CLTC-rated all-electric range of 230 km (142.92 miles).
Driving Characteristics
The DM-i 1.5Ti variant offers a refined driving experience. In typical driving scenarios, the vehicle operates in electric mode, providing near-silent acceleration and instant torque. When extra power is needed, or when the battery is depleted, the gasoline engine seamlessly kicks in. The E-CVT transmission ensures smooth transitions between electric and gasoline power, minimizing any noticeable shift shock. Acceleration from 0 to 100 km/h (0-62 mph) takes 6.9 seconds, which is competitive for its class. Compared to higher-output versions of the Seal 07, this variant prioritizes fuel efficiency over outright performance. The E-CVT is tuned for economy, resulting in slightly less aggressive acceleration than models equipped with a dedicated dual-motor all-wheel-drive system. However, the readily available torque from the electric motor provides ample power for everyday driving situations.
Equipment & Trim Levels
The Seal 07 DM-i 1.5Ti typically comes standard with a comprehensive suite of features, including a large touchscreen infotainment system, a digital instrument cluster, leather upholstery, automatic climate control, and a range of advanced driver-assistance systems (ADAS). These ADAS features often include adaptive cruise control, lane keeping assist, automatic emergency braking, and blind-spot monitoring. Optional extras may include a panoramic sunroof, premium audio system, ventilated front seats, and a 360-degree camera system. Interior trim levels vary, with higher trims offering more luxurious materials and finishes.
Chassis & Braking
The Seal 07 utilizes an independent McPherson strut suspension at the front and an independent multi-link suspension at the rear, providing a comfortable and controlled ride. Ventilated disc brakes are used on the front wheels, while solid discs are found at the rear. The electric power steering system offers precise and responsive handling. The chassis is designed to balance ride comfort with handling agility, making it suitable for both city driving and highway cruising. Stabilizer bars are included to reduce body roll during cornering.
Market Reception & Comparison
The BYD Seal 07 DM-i 1.5Ti has been well-received in the Chinese market, praised for its fuel efficiency, comfortable ride, and advanced technology. Critics have noted its competitive pricing and spacious interior. Compared to other plug-in hybrid sedans in its class, the Seal 07 DM-i offers a compelling combination of range, performance, and features. Its fuel economy of 4.49 l/100 km (52.4 US mpg) is particularly impressive. Compared to the fully electric versions of the Seal 07, the DM-i variant offers the added convenience of a gasoline engine for extended range and reduced range anxiety.
Legacy
The BYD Seal 07 DM-i 1.5Ti represents a significant step forward in plug-in hybrid technology. The DM-i system, with its focus on efficiency and smooth operation, has proven to be reliable and durable. As BYD expands its global presence, the Seal 07 DM-i is expected to become a popular choice for buyers seeking a practical and environmentally friendly vehicle. The longevity of the LiFePO4 battery pack is a key factor in the vehicle’s long-term reliability, as these batteries are known for their stability and long lifespan. On the used car market, well-maintained examples of the Seal 07 DM-i are likely to hold their value due to their fuel efficiency and advanced features.
