The Soueast S06 DM 1.5TD (355 Hp) Plug-in Hybrid DHT is a compact SUV introduced by the Chinese manufacturer Soueast Motor in 2025. Representing a significant step in the company’s electrification strategy, the S06 DM combines a 1.5-liter turbocharged gasoline engine with an electric motor and a plug-in hybrid system, delivering a combined output of 355 horsepower. This variant positions itself as a premium offering within the S06 lineup, focusing on fuel efficiency, performance, and advanced technology. It is built on a dedicated platform for new energy vehicles, aiming to compete with other PHEV SUVs in the rapidly growing Chinese automotive market.
Powertrain & Engine Architecture
The heart of the Soueast S06 DM is its powertrain, a sophisticated plug-in hybrid system centered around the SQRH4J15 1.5-liter inline-four cylinder turbocharged gasoline engine. This engine produces 156 hp at 5200 rpm and 220 Nm (162.26 lb-ft) of torque at 2500 rpm, boasting a high compression ratio of 14.5:1 and direct fuel injection. The engine utilizes a DOHC valvetrain and is equipped with an intercooled turbocharger to enhance performance.
Complementing the gasoline engine is a synchronous electric motor, integrated directly into the transmission. This electric motor delivers 204 hp and 310 Nm (228.64 lb-ft) of torque. The combined system output reaches 355 hp at 5500 rpm and 530 Nm (390.91 lb-ft) of torque between 2000-4000 rpm. The S06 DM employs Soueast’s DHT (Dedicated Hybrid Transmission) – a single-speed automatic transmission designed to seamlessly blend power from both the engine and the electric motor. The DHT system allows for various driving modes, including pure electric, hybrid, and engine-only operation. The vehicle is powered by a 19.43 kWh lithium nickel manganese cobalt oxides (Li-NMC) battery pack, providing an all-electric range of 114 km (70.84 miles) based on the NEDC standard.
Fuel Injection and Valvetrain
The SQRH4J15 engine utilizes a direct injection system, optimizing fuel delivery for improved efficiency and power. The DOHC (Double Overhead Camshaft) valvetrain, with four valves per cylinder, enhances volumetric efficiency and contributes to the engine’s overall performance characteristics. The inclusion of a turbocharger and intercooler further boosts power output and mitigates turbo lag.
Driving Characteristics
The Soueast S06 DM offers a versatile driving experience. In pure electric mode, the vehicle provides silent and emission-free operation, ideal for urban commuting. The electric motor delivers instant torque, resulting in brisk acceleration. When the battery is depleted or requires assistance, the gasoline engine seamlessly engages, providing extended range and power. The DHT transmission ensures smooth transitions between electric and gasoline power, minimizing disruptions in the driving experience. The combined system power of 355 hp translates to responsive acceleration and confident highway performance. While specific 0-60 mph times haven’t been widely published, the vehicle is expected to deliver performance comparable to other similarly powered compact SUVs. The weight-to-power ratio of 4.9 kg/hp contributes to a lively driving feel.
Equipment & Trim Levels
As a premium variant, the S06 DM is expected to come standard with a comprehensive suite of features. These likely include a large touchscreen infotainment system, digital instrument cluster, leather upholstery, automatic climate control, and a range of advanced driver-assistance systems (ADAS). Specific features may vary depending on the trim level, but options could include a panoramic sunroof, premium sound system, and ventilated front seats. The interior design emphasizes comfort and modernity, with a focus on high-quality materials and intuitive controls. The S06 DM is a five-seater SUV with five doors, offering ample space for passengers and cargo.
Chassis & Braking
The Soueast S06 DM features an independent suspension system on both the front and rear axles. The front suspension utilizes a McPherson strut design with coil springs and an anti-roll bar, while the rear suspension employs a multi-link setup with a stabilizer bar. This configuration aims to provide a comfortable ride and responsive handling. The vehicle is equipped with an anti-lock braking system (ABS) and electric power steering. Tire sizes range from 235/55 R19 to 255/45 R20, depending on the trim level, and are mounted on 19 or 20-inch alloy wheels. Specific details regarding brake rotor sizes and materials haven’t been widely released, but the system is designed to provide adequate stopping power for the vehicle’s weight and performance.
Market Reception & Comparison
The Soueast S06 DM 1.5TD is positioned to compete with other plug-in hybrid SUVs in the Chinese market, such as the BYD Song PLUS DM-i and the Haval H6 DM-i. Critics have generally praised the S06 DM for its fuel efficiency, performance, and advanced technology. The combined fuel consumption of 4.9 l/100 km (48 US mpg, 57.6 UK mpg) is competitive within its segment. The all-electric range of 114 km (70.84 miles) is also a significant selling point for consumers seeking to minimize their reliance on gasoline. Compared to lower-trim S06 models with conventional gasoline engines, the DM variant offers superior performance and fuel economy, albeit at a higher price point. Reliability assessments are still emerging, as the vehicle is relatively new to the market, but Soueast Motor has been focusing on improving the quality and durability of its vehicles in recent years.
Technical Specifications
| Brand | Soueast |
| Model | S06 |
| Type | DM 1.5TD (355 Hp) Plug-in Hybrid DHT |
| Start of production | 2025 |
| Body type | SUV |
| Seats | 5 |
| Doors | 5 |
| Fuel consumption (combined) | 4.9 l/100 km (48 US mpg, 57.6 UK mpg) |
| Fuel Type | Petrol / electricity |
| Emission standard | Euro 6 B |
| Gross battery capacity | 19.43 kWh |
| Battery technology | Lithium nickel manganese cobalt oxides (Li-NMC) |
| All-electric range | 114 km (70.84 mi) |
| Electric motor power | 204 Hp |
| Electric motor Torque | 310 Nm (228.64 lb.-ft.) |
| System power | 355 Hp @ 5500 rpm |
| System torque | 530 Nm @ 2000-4000 rpm (390.91 lb.-ft. @ 2000-4000 rpm) |
| Engine Power | 156 Hp @ 5200 rpm |
| Engine Torque | 220 Nm @ 2500 rpm (162.26 lb.-ft. @ 2500 rpm) |
| Engine layout | Front, Transverse |
| Engine Model/Code | SQRH4J15 |
| Engine displacement | 1499 cm3 (91.47 cu. in.) |
| Number of cylinders | 4 |
| Engine configuration | Inline |
| Cylinder Bore | 72 mm (2.83 in.) |
| Piston Stroke | 92 mm (3.62 in.) |
| Compression ratio | 14.5:1 |
| Kerb Weight | 1742 kg (3840.45 lbs.) |
| Fuel tank capacity | 57 l (15.06 US gal | 12.54 UK gal) |
| Length | 4616 mm (181.73 in.) |
| Width | 1910 mm (75.2 in.) |
| Height | 1690 mm (66.54 in.) |
| Wheelbase | 2720 mm (107.09 in.) |
| Gearbox | 1 gears, automatic transmission DHT |
Legacy
The Soueast S06 DM 1.5TD represents a significant step for Soueast Motor in the competitive plug-in hybrid SUV segment. Its long-term reliability will depend on factors such as build quality, component durability, and the effectiveness of the company’s service network. Early indications suggest a positive reception from consumers, driven by its fuel efficiency, performance, and technology features. As the electric vehicle market continues to evolve, the S06 DM is poised to play a key role in Soueast’s transition towards a more sustainable automotive future. Its success will likely influence the development of future plug-in hybrid and electric vehicles from the manufacturer, potentially establishing a benchmark for performance and efficiency within its class.
