BYD Dolphin vs MG MG4 Standard Range 51kWh: real MPG, tax and cost per mile
Side-by-side UK comparison of the BYD Dolphin and MG MG4 Standard Range 51kWh on the metrics that actually drive ownership cost: real-world efficiency, road tax (VED), insurance group and depreciation outlook.
Comparison table
| BYD Dolphin | MG MG4 Standard Range 51kWh | |
|---|---|---|
| Fuel type | electric | electric |
| Body style | hatchback | hatchback |
| Years | 2023–2026 | 2022–2026 |
| Real-world efficiency | 3.58 mi/kWh | 3.2 mi/kWh |
| Official efficiency | 4.42 mi/kWh | 3.9 mi/kWh |
| CO₂ (g/km) | 0 | 0 |
| Road tax year one | £0 | £0 |
| Road tax standard | £195/yr | £190/yr |
| Insurance group | 25/50 | 21/50 |
| Depreciation | average | average |