BMW iX xDrive40 electric vehicle exterior
Discontinued

BMW iX xDrive40 - Electric Vehicle Specs

SUV AWD

Power

240 kW

(326 HP)

0-100 km/h

6.1 s

Top Speed

200 km/h

Battery Options

Standard Battery (76 kWh / 71 kWh)

Charging Curve & Charging Speed Analysis

Understanding Charging Performance

Charging performance isn't just about peak power—it's about sustained power across the entire charging curve. A vehicle that maintains 150kW from 10-80% SOC will charge faster than one that peaks at 250kW but quickly drops to 100kW after 20% SOC. The shape of the curve matters more than the highest peak power.

The key metric is C-rate, which accounts for both charging power and battery capacity. A C-rate of 2.0 means the battery can theoretically charge from 0-100% in 30 minutes, while 1.0 C-rate equals 60 minutes. This makes it easy to compare vehicles regardless of battery size.

Charging Curve Shape

Flat, sustained power across a wide SOC range beats high peaks that quickly taper off. Look for vehicles that maintain high power from 10-80% SOC.

C‑Rate & Timing

C-rate normalizes charging speed across different battery sizes. Higher C-rates mean shorter charging times and more flexible road trip planning.

Battery Options

Gross Capacity: 76 kWh
Net Capacity: 71 kWh
Buffer: 7%
The BMW iX xDrive40 reaches peak charging power of 149 kW between 10–80% SOC.
It takes 35 min to charge from 10–80% SOC and adds 206 km of real-world highway driving range, representing a 1.3 C‑Rate. This performance is better than 31% in its class.

Average Charging Power

73 kW

Avg C‑rate: 1.0

Maximum Charging Power

149 kW

At 9 → 19% SOC

Minimum Charging Power

18 kW

0–100% Charging Time

1 h 2 min

Charging Curve

State of Charge over Time

SOC Range Charging Time Avg. Power Avg. C-Rate Energy Added
0% → 100% 1 h 2 min 73.0 kW 1.03 C 76.4 kWh
0% → 90% 49 min 83.8 kW 1.18 C 68.7 kWh
0% → 80% 38 min 94.8 kW 1.33 C 61.1 kWh
5% → 100% 1 h 0 min 71.6 kW 1.01 C 72.5 kWh
5% → 90% 47 min 82.5 kW 1.16 C 64.9 kWh
5% → 80% 36 min 93.6 kW 1.32 C 57.3 kWh
10% → 100% 59 min 69.7 kW 0.98 C 68.7 kWh
10% → 90% 45 min 80.3 kW 1.13 C 61.1 kWh
10% → 80% 35 min 91.3 kW 1.29 C 53.4 kWh