BYD Dolphin vs MG4
· Real-world figures, not WLTP
Our verdict
The BYD Dolphin and MG4 are both electric hatchbacks in the medium car class. The BYD Dolphin starts at £30,205 in the UK and the MG4 at £23,495, comparing the cheapest version of each.
The Dolphin goes further, with about 217 miles of real-world range against 158 for the MG4. On top of that, it charges faster on a rapid charger (75 kW against 65 kW on average, 10–80%) and is quicker, doing 0–62 mph in 7.0 s against 9.6 s.
The MG4 is £6,710 cheaper to buy new (£23,495 against £30,205). On top of that, it uses less energy (3.8 mi/kWh against 3.6 mi/kWh), has the bigger boot (577 litres against 345) and has the longer warranty (7 years against 6).
Choose the BYD Dolphin if you want the longest range and quicker charging stops and the MG4 if you want the lower price and lower running costs.
Written from the figures below, comparing the cheapest UK version of each. Other versions can differ: open them in Compare to swap versions.
Price
- Price new
- £30,205on sale now
- £23,495 (best)on sale now
- Used from (estimated)
- £17,2002025 car
- –too new
- Price per mile of range
- £139 (best)
- £148
Range and efficiency
- Real-world range
- 217 mi (best)350 km, estimate
- 158 mi255 km, estimate
- Range today, used (estimated)
- about 213 mi2025 car, est.
- –
- Efficiency
- 3.6 mi/kWh173 Wh/km, estimate
- 3.8 mi/kWh (best)164 Wh/km, estimate
- Range with one 15-min stop
- 220 mi (best)354 km
- 170 mi273 km
Charging
- Rapid charging
- 75 kW (best)10–80% average
- 65 kW10–80% average
- Home (AC) charging
- 11 kW
- 11 kW
- Charging plug
- Type 2 CCS
- Type 2 CCS
- Vehicle-to-load (V2L)
- Yes
- Yes
- Vehicle-to-home (V2H)
- No
- No
- Vehicle-to-grid (V2G)
- No
- No
Battery
- Usable battery
- 60.48 kWh (best)
- 41.9 kWh
- Battery chemistry
- LFP (lithium iron phosphate)
- LFP (lithium iron phosphate)
- Heat pump
- Yes
- Yes
Body and performance
- Body style
- Hatchback
- Hatchback
- Size class
- C · Medium car
- C · Medium car
- Seats
- 5
- 5
- Drive
- Front-wheel drive
- Front-wheel drive
- 0–62 mph
- 7.0 s (best)0–100 km/h
- 9.6 s0–100 km/h
- Weight
- 1,733 kg
- 1,535 kg
Size
- Length
- 4.29 m14 ft 1 in
- 4.40 m14 ft 5 in
- Width (without mirrors)
- 1.77 m5 ft 10 in
- 1.84 m6 ft 1 in
- Width with mirrors
- 2.01 m6 ft 7 in
- 2.14 m7 ft
- Height
- 1.57 m5 ft 2 in
- 1.55 m5 ft 1 in
- Wheelbase
- 2.70 m8 ft 10 in
- 2.75 m9 ft
Practicality and safety
- Boot space
- 345 litres
- 577 litres (best)
- Towbar available
- Yes
- Yes
- Towing (braked)
- Not approved
- 500 kg (best)
- Max payload
- 410 kgpeople and luggage
- 450 kg (best)people and luggage
- Euro NCAP rating
- 5 stars
- 5 stars
Warranty (UK)
- Car warranty
- 6 years93,750 miles
- 7 years (best)80,000 miles
- Battery warranty
- 8 years (best)125,000 miles
- 7 years80,000 miles, 70% capacity
- Passes to next owner
- Yes, with conditions
- Yes
Availability
- Status
- On sale new
- On sale new
- Model years
- 2025–2026
- 2026 on
Green marks the better figure in each row. Range is a real-world estimate, not WLTP. Used prices are estimates. Warranty terms are UK terms from each maker’s website.
Every version
BYD Dolphin
- DOLPHIN 60.4 kWh (MY25)£30,205 · 217 mi
MG4
- MG4 Urban Standard Range (MY26)£23,495 · 158 mi
- MG4 Urban Comfort Long Range (MY26)£25,495 · 199 mi
- MG4 Urban Premium Long Range (MY26)£27,995 · 199 mi
- MG4 Premium Long Range (MY26)£29,995 · 224 mi
- MG4 Premium Extended Range (MY26)£32,995 · 270 mi
- MG4 XPOWER (MY26)£33,995 · 202 mi