The BYD Song Max DM 1.5TI 15.98 kWh (303 Hp) DCT is a plug-in hybrid electric vehicle (PHEV) produced by the Chinese automaker BYD from March 2019 to 2021. Positioned as a mid-range offering within the Song Max lineup, it aimed to provide a balance between fuel efficiency, performance, and practicality for families. The Song Max, a multi-purpose vehicle (MPV), was specifically designed for the Chinese market, catering to the demand for spacious and versatile vehicles. This particular variant, with its 1.5-liter turbocharged engine and dual-motor hybrid system, represented BYD’s commitment to new energy vehicles and its growing technological capabilities. It competed with other MPVs in China, offering a compelling alternative with its plug-in hybrid powertrain.
Technical Specifications
| Brand | BYD |
| Model | Song Max |
| Generation | Song Max |
| Type (Engine) | DM 1.5TI 15.98 kWh (303 Hp) DCT |
| Start of production | March, 2019 |
| End of production | 2021 |
| Powertrain Architecture | PHEV (Plug-in Hybrid Electric Vehicle) |
| Body type | MPV |
| Seats | 6-7 |
| Doors | 5 |
| Fuel consumption (combined) | 1.2 l/100 km (196 US mpg, 235.4 UK mpg, 83.3 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 |
| Maximum speed | 170 km/h (105.63 mph) |
| Emission standard | China V |
| Gross battery capacity | 15.98 kWh |
| Battery technology | Lithium iron phosphate (LiFePO4) |
| Battery location | Below the floor, under the front seats |
| All-electric range | 81 km (50.33 mi) |
| Electric motor power | 150 Hp |
| Electric motor Torque | 250 Nm (184.39 lb.-ft.) |
| Electric motor location | Front, Transverse |
| Electric motor type | Synchronous |
| System power | 303 Hp |
| System torque | 490 Nm (361.41 lb.-ft.) |
| Power | 154 Hp @ 5200 rpm |
| Torque | 240 Nm @ 1750-3500 rpm (177.01 lb.-ft. @ 1750-3500 rpm) |
| Engine layout | Front, Transverse |
| Engine Model/Code | BYD476ZQA |
| Engine displacement | 1497 cm3 (91.35 cu. in.) |
| Number of cylinders | 4 |
| Engine configuration | Inline |
| Cylinder Bore | 73 mm (2.87 in.) |
| Piston Stroke | 89.4 mm (3.52 in.) |
| Compression ratio | 10:1 |
| Number of valves per cylinder | 4 |
| Fuel injection system | Direct injection |
| Engine aspiration | Turbocharger |
| Engine oil capacity | 3.7 l (3.91 US qt | 3.26 UK qt) |
| Fuel tank capacity | 52 l (13.74 US gal | 11.44 UK gal) |
| Length | 4680 mm (184.25 in.) |
| Width | 1810 mm (71.26 in.) |
| Height | 1680 mm (66.14 in.) |
| Wheelbase | 2785 mm (109.65 in.) |
| Drivetrain Architecture | Front wheel drive. PHEV. ICE and electric motor drive the front wheels. |
| Number of gears and type of gearbox | 6 gears, automatic transmission DCT |
| Front suspension | Independent type McPherson |
| Rear suspension | Torsion |
| 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 | 225/50 R18 |
| Wheel rims size | 18 |
Introduction
The BYD Song Max DM 1.5TI 15.98 kWh (303 Hp) DCT, launched in March 2019, represents a significant step in BYD’s development of plug-in hybrid technology. Built on the Song Max platform, this variant offered a compelling combination of internal combustion engine (ICE) efficiency and electric driving range. The “DM” designation signifies BYD’s Dual Mode hybrid system. The Song Max itself is a seven-seater MPV designed to appeal to families in the Chinese market, where spaciousness and practicality are highly valued. This specific trim level, with its 303 horsepower combined output, aimed to provide a more engaging driving experience than the lower-powered versions while still maintaining the benefits of electric propulsion.
Powertrain & Engine Architecture
At the heart of the Song Max DM 1.5TI lies a 1.5-liter turbocharged four-cylinder gasoline engine (BYD476ZQA). This engine produces 154 horsepower at 5200 rpm and 240 Nm (177 lb-ft) of torque between 1750 and 3500 rpm. It features direct fuel injection and a turbocharger to enhance power and efficiency. The engine is paired with a 15.98 kWh lithium iron phosphate (LiFePO4) battery pack located under the floor and front seats, providing an all-electric range of 81 kilometers (50.33 miles). An electric motor, delivering 150 horsepower and 250 Nm (184 lb-ft) of torque, works in conjunction with the ICE. The combined system output reaches 303 horsepower and 490 Nm (361 lb-ft) of torque. Power is delivered to the front wheels via a 6-speed dual-clutch transmission (DCT). The DCT was chosen for its quick shifting and efficiency, contributing to the vehicle’s overall performance and fuel economy.
Driving Characteristics
The Song Max DM 1.5TI offers a surprisingly responsive driving experience, thanks to the combined output of the engine and electric motor. In electric mode, the vehicle provides smooth and quiet acceleration, ideal for city driving. When the battery is depleted or requires assistance, the gasoline engine seamlessly kicks in, providing additional power. The DCT transmission delivers quick and precise gear changes, enhancing the overall driving experience. Compared to lower-powered Song Max variants, the 1.5TI offers noticeably quicker acceleration – achieving 0-100 km/h in 6.9 seconds. While not a sports car, the 303 hp output provides ample power for overtaking and highway cruising. The suspension is tuned for comfort, prioritizing ride quality over sporty handling. The steering is light and easy to use, making it well-suited for urban environments.
Equipment & Trim Levels
The Song Max DM 1.5TI typically came equipped with a range of standard features, including automatic climate control, a touchscreen infotainment system, Bluetooth connectivity, and a rearview camera. Higher trim levels offered additional features such as leather upholstery, a panoramic sunroof, and advanced driver-assistance systems (ADAS) like adaptive cruise control and lane departure warning. Interior appointments were generally comfortable and well-equipped, reflecting the MPV’s family-oriented focus. The dashboard layout was modern and functional, with a focus on ease of use. Optional extras included upgraded sound systems and various cosmetic enhancements.
Chassis & Braking
The Song Max DM 1.5TI utilizes a front-wheel-drive layout with an independent McPherson strut suspension in the front and a torsion beam suspension in the rear. This setup provides a good balance between ride comfort and handling. The vehicle is equipped with ventilated disc brakes in the front and solid disc brakes in the rear. Anti-lock braking system (ABS) is standard, enhancing safety and control during emergency braking situations. The chassis is designed to provide a stable and comfortable ride, even when fully loaded with passengers and cargo. The electric power steering system offers light and precise steering feel.
Market Reception & Comparison
The BYD Song Max DM 1.5TI was generally well-received in the Chinese market, praised for its fuel efficiency, spacious interior, and comfortable ride. Critics noted the vehicle’s smooth and quiet electric driving mode and its responsive acceleration when the gasoline engine engaged. Compared to other MPVs in its class, the Song Max DM offered a compelling value proposition, particularly for buyers seeking a plug-in hybrid option. Compared to the standard gasoline-powered Song Max models, the DM variant commanded a higher price but offered significantly improved fuel economy and the benefits of electric driving. Against competitors like the Honda Odyssey and Toyota Sienna (which were less common in the Chinese market at the time), the Song Max DM offered a unique combination of features and technology.
Legacy
The BYD Song Max DM 1.5TI played a crucial role in establishing BYD as a leader in the Chinese new energy vehicle market. The powertrain, while not without its complexities, proved to be relatively reliable in real-world use. On the used car market, these models continue to be sought after by buyers looking for an affordable and fuel-efficient MPV. The LiFePO4 battery technology used in the Song Max DM is known for its stability and longevity, contributing to the vehicle’s long-term reliability. The Song Max DM paved the way for BYD’s subsequent generations of plug-in hybrid and electric vehicles, solidifying its position as a major player in the global automotive industry.





