USA EV Comparison: BYD Dolphin Surf Boost vs Dongfeng Box 42.3 kWh
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General Info
While both vehicles are currently in production, they are not sold in the United States.
The two vehicles share the same body style: Hatchback.
| Property | BYD Dolphin Surf Boost | Dongfeng Box 42.3 kWh |
|---|---|---|
| Years of Production | 2025-… | 2024-… |
| Current Status | Produced | Produced |
| Country of Manufacture | China | China |
| Body Style | Hatchback | Hatchback |
| Market Availability | EU | EU |
| GCC Score | 5 | 4.6 |
Range and Efficiency
While the BYD Dolphin Surf Boost (2025-…) offers a longer real-world range and a bigger battery, it is less energy-efficient than the Dongfeng Box 42.3 kWh (2024-...).
| Property | BYD Dolphin Surf Boost | Dongfeng Box 42.3 kWh |
|---|---|---|
| Range (WLTP) | 200 mi | 193 mi |
| Range (GCC) | 170 mi | 164 mi |
| Battery Capacity (Nominal) | 46 kWh | 42.3 kWh |
| Battery Capacity (Usable) | 43.2 kWh | 40 kWh |
| Efficiency per 100 mi | 25.4 kWh/100 mi | 24.4 kWh/100 mi |
| Efficiency per kWh | 3.94 mi/kWh | 4.1 mi/kWh |
| Range and Efficiency Score | 6 | 6.1 |
Charging
Both vehicles utilize a standard 400-volt architecture.
The Dongfeng Box 42.3 kWh (2024-...) offers faster charging speeds at DC stations, reaching up to 88 kW, while the BYD Dolphin Surf Boost (2025-…) maxes out at 85 kW.
The BYD Dolphin Surf Boost (2025-…) features a more powerful on-board charger, supporting a maximum AC charging power of 11 kW, whereas the Dongfeng Box 42.3 kWh (2024-...) is limited to 6.6 kW.
| Property | BYD Dolphin Surf Boost | Dongfeng Box 42.3 kWh |
|---|---|---|
| Max Charging Power (AC) | 11 kW | 6.6 kW |
| Max Charging Power (DC) | 85 kW | 88 kW |
| Architecture | 400 V | 400 V |
| Charge Port | CCS Type 2 | CCS Type 2 |
| Charging Score | 5.3 | 3.7 |
Performance
Both vehicles are front-wheel drive.
Although the Dongfeng Box 42.3 kWh (2024-...) has more power, the BYD Dolphin Surf Boost (2025-…) achieves a faster 0-60 mph time.
| Property | BYD Dolphin Surf Boost | Dongfeng Box 42.3 kWh |
|---|---|---|
| Drive Type | FWD | FWD |
| Motor Type | PMSM | PMSM |
| Motor Power (kW) | 65 kW | 70 kW |
| Motor Power (hp) | 87 hp | 94 hp |
| Motor Torque | 129 lb-ft | 118 lb-ft |
| 0-60 mph | 11.6 s | 12 s |
| Top Speed | 93 mph | 87 mph |
| Performance Score | 2 | 1.8 |
Dimensions
The Dongfeng Box 42.3 kWh (2024-...) boasts a more extended wheelbase.
| Property | BYD Dolphin Surf Boost | Dongfeng Box 42.3 kWh |
|---|---|---|
| Length | 157.1 in | 158.3 in |
| Width (with Mirrors) | 77.6 in | 71.3 in |
| Width (w/o Mirrors) | 67.7 in | - Width (w/o Mirrors) |
| Height | 62.6 in | 61.8 in |
| Wheelbase | 98.4 in | 104.8 in |
Cargo and Towing
The Dongfeng Box 42.3 kWh (2024-...) features a larger trunk, but the BYD Dolphin Surf Boost (2025-…) offers greater maximum cargo capacity when the rear seats are folded.
Neither car is equipped with a frunk (front trunk).
Neither vehicle is officially rated for towing in the US.
| Property | BYD Dolphin Surf Boost | Dongfeng Box 42.3 kWh |
|---|---|---|
| Number of Seats | 4 | 5 |
| Curb Weight | 3020 lb | 3152 lb |
| Cargo Volume (Trunk) | 10.9 ft3 | 11.5 ft3 |
| Cargo Volume (Max) | 36.6 ft3 | 33.4 ft3 |
| Cargo Volume (Frunk) | - Cargo Volume (Frunk) | - Cargo Volume (Frunk) |
| Towing Capacity | - Towing Capacity | - Towing Capacity |
| Cargo and Towing Score | 4.2 | 4.2 |
