The BYD Song Pro DM-i 1.5 (179 Hp) E-CVT, a plug-in hybrid electric vehicle (PHEV), represents a significant step in BYD’s strategy to electrify the Chinese automotive market and expand its global presence. Introduced in November 2021 as part of the Song Pro facelift, this variant was produced through May 2023. It occupies a key position within the Song Pro lineup, offering a balance between fuel efficiency, performance, and affordability. The DM-i designation signifies BYD’s “Dual Mode – intelligent” technology, prioritizing electric driving while retaining the flexibility of a gasoline engine. This model is primarily targeted towards urban commuters and families seeking a practical and environmentally conscious SUV.
Technical Specifications
| Brand | BYD |
| Model | Song |
| Generation | Song Pro (facelift 2021) |
| Type (Engine) | DM-i 1.5 (179 Hp) E-CVT |
| Start of production | November, 2021 |
| End of production | May, 2023 |
| Powertrain Architecture | PHEV (Plug-in Hybrid Electric Vehicle) |
| Body type | SUV |
| Seats | 5 |
| Doors | 5 |
| Fuel consumption (economy) – combined (NEDC) | 1.5 l/100 km (156.8 US mpg, 188.3 UK mpg, 66.7 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 |
| Emission standard | China VI |
| Gross battery capacity | 8.3 kWh |
| Battery technology | Lithium iron phosphate (LiFePO4) |
| Battery location | Below the floor |
| All-electric range (NEDC) | 51 km (31.69 mi) |
| Electric motor power | 179 Hp |
| Electric motor Torque | 316 Nm (233.07 lb.-ft.) |
| Electric motor location | Front, Transverse |
| Electric motor type | Synchronous |
| System power | 179 Hp |
| Power | 110 Hp @ 6000 rpm |
| Torque | 135 Nm @ 4500 rpm (99.57 lb.-ft. @ 4500 rpm) |
| Engine layout | Front, Transverse |
| Engine Model/Code | Xiaoyun / 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 |
| Engine oil capacity | 3 l (3.17 US qt | 2.64 UK qt) |
| Fuel tank capacity | 52 l (13.74 US gal | 11.44 UK gal) |
| Length | 4650 mm (183.07 in.) |
| Width | 1860 mm (73.23 in.) |
| Height | 1700 mm (66.93 in.) |
| Wheelbase | 2712 mm (106.77 in.) |
| Front track | 1565 mm (61.61 in.) |
| Rear (Back) track | 1565 mm (61.61 in.) |
| Minimum turning circle | 11.6 m (38.06 ft.) |
| Drivetrain Architecture | Front wheel drive. PHEV. ICE and electric motor drive the front wheels in full electric or mixed mode. |
| 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 | 225/60 R18 |
| Wheel rims size | 18 |
Powertrain & Engine Architecture
The Song Pro DM-i 1.5 utilizes a parallel plug-in hybrid system. The core of the powertrain is the BYD472QA 1.5-liter naturally aspirated inline-four cylinder engine, producing 110 horsepower at 6000 rpm and 135 Nm (99.57 lb.-ft.) of torque at 4500 rpm. This engine operates on the Atkinson cycle, prioritizing thermal efficiency over outright power. The engine is paired with a single electric motor, delivering 179 horsepower and 316 Nm (233.07 lb.-ft.) of torque. The system’s combined output is 179 horsepower. A key component is the E-CVT (electronically controlled continuously variable transmission), which seamlessly blends power from the engine and motor. The 8.3 kWh lithium iron phosphate (LiFePO4) battery pack, located under the floor, provides an all-electric range of 51 kilometers (31.69 miles) based on the NEDC standard. The DM-i system prioritizes electric drive whenever possible, switching to hybrid mode for higher speeds or when the battery is depleted.
Driving Characteristics
The DM-i 1.5 E-CVT offers a refined and comfortable driving experience. In pure electric mode, acceleration is brisk and quiet, making it ideal for city driving. The E-CVT transmission provides smooth, stepless acceleration, eliminating the gear shifts associated with traditional automatic transmissions. When the gasoline engine engages, the transition is generally seamless, though some engine noise is noticeable during hard acceleration. Compared to higher-output Song Pro variants, such as those with larger gasoline engines, the DM-i 1.5 prioritizes efficiency over outright performance. The 0-60 mph time of around 8.1 seconds is respectable but not particularly sporty. The E-CVT is tuned for fuel economy, which means it doesn’t offer the same level of responsiveness as a dual-clutch transmission found in some competing models.
Equipment & Trim Levels
The Song Pro DM-i 1.5 typically came well-equipped, reflecting its position as a mid-range offering. Standard features generally included LED headlights, a large touchscreen infotainment system with smartphone connectivity, automatic climate control, and a suite of safety features such as ABS, electronic stability control, and multiple airbags. Interior upholstery was typically cloth or synthetic leather, with higher trims offering genuine leather options. Optional extras included a panoramic sunroof, upgraded sound system, and advanced driver-assistance systems (ADAS) like adaptive cruise control and lane keeping assist. The dashboard layout was modern and functional, with a focus on ease of use.
Chassis & Braking
The Song Pro DM-i 1.5 features a front-wheel-drive layout. The front suspension utilizes independent McPherson struts, while the rear employs an independent multi-link suspension. This setup provides a good balance between ride comfort and handling. Ventilated disc brakes are used on the front wheels, while solid discs are found at the rear. The electric power steering provides light and precise steering feel. The vehicle’s relatively low weight, thanks to the hybrid powertrain, contributes to its agile handling characteristics. Stabilizer bars are fitted to both the front and rear axles to reduce body roll during cornering.
Market Reception & Comparison
The Song Pro DM-i 1.5 was generally well-received in the Chinese market. Critics praised its fuel efficiency, comfortable ride, and spacious interior. The plug-in hybrid powertrain was seen as a compelling alternative to traditional gasoline-powered SUVs. Compared to other Song Pro trims, the DM-i 1.5 offered superior fuel economy and a quieter driving experience. However, some reviewers noted that its performance was not as exhilarating as that of the higher-output gasoline variants. Its main competitors included other Chinese PHEV SUVs, such as those from Geely and Changan, as well as hybrid models from international brands.
Legacy
The BYD Song Pro DM-i 1.5 represents a pivotal model in BYD’s transition towards becoming a leading global electric vehicle manufacturer. The DM-i technology has proven to be highly successful, and the Song Pro DM-i continues to be a popular choice in the Chinese market. The powertrain’s reliability has been generally good, with the LiFePO4 battery pack known for its durability and safety. On the used car market, these models hold their value reasonably well, reflecting the growing demand for plug-in hybrid vehicles. The Song Pro DM-i 1.5 laid the groundwork for BYD’s subsequent electric vehicle offerings and helped establish the brand as a major player in the new energy vehicle segment.
