Comparison between:
- 2025 BYD Dolphin Surf Comfort
- 2021 BMW i3 42 kWh
Brand, model, trim, price
Information about the brand, series, model name and year, trim and price of the electric vehicle.
| 2025 BYD Dolphin Surf Comfort | 2021 BMW i3 42 kWh | |
 |  | |
| Model alias | Comfort 115kW 43.2kWh | - |
| Trim | Comfort | 42 kWh |
| Model year | 2025 (MY25) | 2021 (MY21) |
| Market | Europe | North America, Europe |
Body style, dimensions, volumes, weights.
Information about the EV body style, dimensions, clearance, volumes, curb weight, GVWR.
| Body style | Hatchback | Hatchback |
| Materials | Steel Aluminum | Carbon fiber reinforced polymer Aluminium |
| Exterior colors | Lime green Polar Night black Apricity white Ice blue | Jucaro Beige Metallic Capparis White Fluid Black Imperial Blue Metallic Melbourne Red Metallic Mineral Grey Metallic |
| Interior colors | Black Grey | Black Dark Grey Light Grey Brown |
| Number of doors | 5 | 5 |
| Number of seats | 4 | 4 |
| Length | 157.1 in 3990 mm | 157.9 in 4011 mm |
| Width | - | 69.9 in 1775 mm |
| Width with mirrors | 77.6 in 1970 mm | 80.3 in 2040 mm |
| Width with folded mirrors | 67.7 in 1719 mm | - |
| Height | 62.4 in 1585 mm | 62.9 in 1598 mm |
| Wheelbase | 98.4 in 2500 mm | 101.2 in 2570 mm |
| Front track | 59.0 in 1499 mm | 61.9 in 1572 mm |
| Rear track | 58.4 in 1483 mm | 62.0 in 1575 mm |
| Front overhang | 31.6 in 803 mm | 30.3 in 770 mm |
| Rear overhang | 27.0 in 686 mm | 38.0 in 965 mm |
| Approach angle | 15 ° | - |
| Departure angle | 23.5 ° | - |
| Clearance | 6.1 in 154 mm | 5.5 in 139 mm |
| Front headroom | - | 39.6 in 1006 mm |
| Rear headroom | - | 37.2 in 945 mm |
| Front shoulder room | - | 53.6 in 1361 mm |
| Rear shoulder room | - | 49.2 in 1250 mm |
| Front legroom | - | 40.5 in 1029 mm |
| Rear legroom | - | 31.9 in 810 mm |
| Trunk volume | 308.0 l 10.88 ft3 0.31 m3 | 260.0 l 9.18 ft3 0.26 m3 |
| Maximum trunk volume | 1037.0 l 36.62 ft3 1.04 m3 | 1100.0 l 38.85 ft3 1.10 m3 |
| Curb weight | 3064.43 lb 1390 kg | 2965.22 lb 1345 kg |
| Front axle load limit | 1913.61 lb 868 kg | - |
| Rear axle load limit | 1873.93 lb 850 kg | - |
| Payload | - | 970.03 lb 440 kg |
| GVWR | 3787.54 lb 1718 kg | 3780.93 lb 1715 kg |
| Drag coefficient | - | 0.29 Cd |
Electric motor
Information about the model's electric motor and its performance
| Manufacturer | BYD | BMW |
| Model | TZ200XSAU | - |
| Electric motor type | Permanent Magnet Synchronous Motor (PMSM) | Permanent Magnet Synchronous Motor (PMSM) |
| Location of the motor | Front | Rear |
| Power | 115 kW 154.2 hp 156.4 ps | 125 kW 167.6 hp 170.0 ps |
| Maximum power RPM | - | 4800 rpm |
| Torque | 220 Nm 22.4 kgm 162.3 ft-lb | 250 Nm 25.5 kgm 184.4 ft-lb |
| Regenerative braking | Yes | Yes |
| Driving modes | - | Eco Eco+ Comfort |
Total system power and torque
Information about the total system power and torque of the vehicle.
| Total system power | 115 kW 154.2 hp 156.4 ps | 125 kW 167.6 hp 170.0 ps |
| Total system torque | 220 Nm 22.4 kgm 162.3 ft-lb | 250 Nm 25.5 kgm 184.4 ft-lb |
Performance
Information about the top speed and acceleration of the model.
| Top speed | 93.2 mph 150.0 km/h | 93.2 mph 150.0 km/h |
| Acceleration from 0 to 100 km/h | 9.10 s | 7.20 s |
Driving range
Information about the official driving range of the model according to EPA, NEDC, WPTL.
| Driving range | WLTP, CTY: 285.8 mi / 460.0 km WLTP, CMB: 192.6 mi / 310.0 km | NEDC, CMB: 223.1 mi / 359.0 km EPA, CMB: 153.0 mi / 246.2 km WLTP, CMB: 192.6 mi / 310.0 km |
Energy efficiency
Information about the energy efficiency of the model in various measurement units according to EPA, NEDC, WPTL.
| Energy efficiency | WLTP, CTY: 10.8 kWh/100 km WLTP, CMB: 16 kWh/100 km | NEDC, CMB: 13.1 kWh/100 km EPA, CTY: 124 MPGe EPA, CMB: 30 kWh/100 mi EPA, CMB: 102 MPGe EPA, CMB: 112 MPGe |
Energy class
Information about the energy class of the electric car.
| Energy class | A | A+ |
Steering
Information about the type of the steering mechanism of the model and related features.
| Type of steering mechanism | Rack and pinion | Rack and pinion |
| Type of power steering | Electronic | Electronic |
| Turning circle | 9.9 m 32.48 ft | 9.86 m 32.35 ft |
Transmission
Information about the transmission of the model.
| Type of transmission | Automatic single-speed reduction gear | Automatic single-speed reduction gear |
| Drivetrain | Front-wheel drive (FWD) | Rear-wheel drive (RWD) |
| Axle ratio | - | 9.665 |
| Additional information | - | Transmission type: GE1B |
Suspension
Information about the system of components that connects the wheels and axles to the chassis.
| Front suspension | MacPherson strut Independent | Independent MacPherson strut Coil springs (helical springs) Shock absorbers |
| Rear suspension | Torsion beam (twist beam / torsion bar) | Independent Multi-link Coil springs (helical springs) |
Brakes
Information about the brake system used on this model.
| Front brakes | Ventilated discs | Ventilated discs |
| Rear brakes | Discs | Ventilated discs |
Rims
Information about the rims available for this electric car.
| Rims | 6Jx16 ET45 | 5Jx19 5.5Jx19 5Jx20 |
Tyres
Information about the tyres available for this electric vehicle.
| Tyres | 185/55R16 87V | 155/70R19 84Q 155/60R20 175/50R20 |
Battery
Specifications and features of the rechargeable battery that powers this vehicle.
| Usable (net) battery capacity | - | 37.9 kWh |
| Total (gross) battery capacity | - | 42.2 kWh |
| Battery capacity | 43.2 kWh | - |
| Battery capacity in Ah | 150 Ah | 120 Ah |
| Manufacturer | BYD | Samsung SDI |
| Model | Blade Battery | - |
| Type | LFP | NCM622 |
| Cathode materials | Lithium Iron Phosphate (LiFePO4) | Lithium Nickel Cobalt Manganese Oxide (LiNiCoMnO2) |
| Number of cells | - | 96 |
| Battery cell format | - | Pouch |
| Cell nominal voltage | 3.2 V | 3.6 V - 3.7 V |
| Cell max charge voltage | 3.6 V - 3.65 V | 4.2 V |
| Cell min discharge voltage | 2 V - 2.5 V | 2.5 V - 3 V |
| Number of modules | - | 8 |
| Battery voltage | 288 V | 352 V |
| Weight | 683.43 lb 310 kg | - |
| Location | Under the floor, middle | Under the floor, middle |
| Thermal Management | - | Optional battery heater AC refrigerant-based cooling system |
| Additional information | - | Estimated volumetric energy density - 449 Wh/L |
Onboard charger/Charging port
Information about the onboard charger(s)/charging port(s) available on this electric vehicle.
| Onboard charger/Charging port | Type 2 CCS2 | Type 1 CCS1 Type 2 CCS2 |
Charging type
Information about the different types of charging of this specific electric car.
| Charging type | AC 11 kW DC 65 kW | AC 2.8 kW AC 3.7 kW AC 7.4 kW AC 11 kW DC 50 kW |
Charging time
Information about the estimated charging time for this EV depending on the various type of charging it supports.
| Charging time | DC 85 kW, 0:22 DC 85 kW, 0:30 AC 11 kW, 5:00 | DC 50 kW, 0:41 AC 11 kW, 3:50 AC 7.4 kW, 5:42 AC 3.7 kW, 11:24 AC 2.8 kW, 15:04 |
Additional features
A list of standard and optional exterior and interior features of the model.
| Additional features | - | Rear cupholders (S) Adaptive Cruise/Speed Control (O) Brake Assist System (S) Camera-based cruise control with Stop&Go function (O) City brake function (O) Collision Warning System (O) Cornering Brake Control (S) Electronic Brake Distribution (S) Electronic hand brake (S) Engine Start Button (S) Front and rear park distance control (S) Front and side airbags (S) Front radar (S) Full-length side curtain airbags (S) Hill holder (S) Immobilizer (S) Low Tire Pressure Indicator (S) Pasrking Assistance (O) Passenger Assist Handles (S) Pedestrian and collision warning (O) Proactive driving assistant (O) Rear camera and radar (S) Service Interval Indicator (S) Speed limit info (O) Standard Cruise/Speed Control (S) Theft Deterrent System (S) Traffic jam assistant (O) 10.3-inch multi-funciton touchscreen (O) 12V power outlet (S) 200GB internal HD (O) 6.5-inch touchscreen (S) AM/FM Radio, Digital Radio (S) Bluetooth (S) BMW Apps (O) BMW iDrive (S) BMW Online with MyInfo (O) Coming Home Device (S) ConnectedDrive Services (S) Garage Door Opener (S) Internal HD (S) Keyless entry (S) MP3 Player (O) Navigation (S) Remote Audio Controls (S) Satellite radio (S) 4 x sepakers, standard audio system (S) Smart Card/Key (S) 12 x speakers, 360 watt, Harmon/Kardon Premium Sound (O) Text To Speech / Speech To Text (O) Wi-Fi hotspot (O) Wireless charging pad (O) Climate control (S) Remote control (S) Ventilation System (S) Head Restraints (S) Heated front seats (S) Isofix Preparation (S) Leather-trimmed, tilt telescoping (S) Door Entry Light (S) Heated washer (S) Moonroof (O) Power Locks (S) Power Locks, With Passive Access (Card Key) (S) Tinted glass windows (S) Zone-tinted windshield with wipers (S) Automatic rear-view mirror (S) Foldable side mirrors (S) Illuminated driver and passenger vanity mirror (S) Memory adjustment (S) Toned heated driver and passenger power side mirrors with turn signals (S) Adaptive LED headlights with turn lights and high beam assist (O) Headlight Control, Dusk Sensor (S) LED daytime running lights (S) LED headlights with cornering lights (S) LED taillights (S) Alloy Look On Instrument Panel And Shift Knob (S) Cargo Area Cover (S) Cloth (S) Dark Oak wood trim (O) Electronic Brown Trim (S) Eucalyptus wood trim (O) Leather and cloth (S) Mega Carum Spice Grey SensaTec with Brown Cloth highlights (S) Tera Dark Truffle Vernasca Leather (S) Titanium Look On Instrument Panel (S) Wood/Woodgrain On Instrument Panel (S) |
Additional information
Additional information about this electric vehicle.
| Additional information | - | BMW i3 interior worlds have different names and variants in different markets. In the US they are Deka World / Mega World / Giga World / Tera World. In the UK they are Atelier / Lodge / Loft / Suite. |
| 2025 BYD Dolphin Surf Comfort | 2021 BMW i3 42 kWh |