Data shown is approximate and based on publicly available specifications and real-world estimates. Actual performance varies with driving conditions, temperature, state of charge, and charger hardware. Always check your vehicle's manual for official specifications. EVcourse is not affiliated with any vehicle manufacturer.
Quick verdict
The Lexus RZ charges faster with a peak of 150 kW DC, while the BMW iX1 is more efficient at 170 Wh/km. The Lexus RZ offers more WLTP rated range at 440 km.
Side-by-Side Specs
| Spec | BMW iX1 | Lexus RZ |
|---|---|---|
| Battery (approx.) | ~64.7 kWh | ~72 kWh |
| WLTP range (rated) | ~440 km | ~440 km |
| Efficiency (approx.) | ~170 Wh/km | ~180 Wh/km |
| Max DC charging | up to 128 kW | up to 150 kW |
| 10-80% charge time (approx.) | ~33 min | ~30 min |
| Max AC charging | up to 11 kW | up to 11 kW |
| DC connector | CCS2 | CCS2 |
Charging Speed
The Lexus RZ has a peak DC charging speed of 150 kW, which is roughly 17% faster than the BMW iX1 at 128 kW. In practice, peak speed only tells part of the story. The charging curve, battery temperature, and state of charge all affect how quickly your car actually charges.
For the 10-80% charge (the most common DC fast charging scenario), the Lexus RZ finishes in about 30 minutes, which is 3 minutes quicker than the BMW iX1 at 33 minutes. On a road trip, that difference adds up over multiple stops.
Range and Efficiency
The Lexus RZ has a WLTP rated range of approximately 440 km, which is comparable to the BMW iX1 at approximately 440 km. WLTP is a standardized lab test. Expect your actual range to be lower, varying with speed, weather, terrain, and driving style.
Efficiency matters more than battery size for daily driving costs. The BMW iX1 consumes 170 Wh/km, compared to 180 Wh/km for the Lexus RZ. That means the BMW iX1 uses less energy per kilometer, which translates to lower charging costs and fewer charging stops on longer drives.
A more efficient car does not always mean more range. Battery size plays a role too. The Lexus RZ has approximately 72 kWh of useable battery , while the BMW iX1 has approximately 64.7 kWh.
Which One Should You Choose?
If fast charging speed is your priority, the Lexus RZ wins on both peak power (up to 150 kW) and time at the plug (approximately 30 minutes from 10-80%). For long road trips with multiple charging stops, that faster turnaround makes a real difference.
Both cars support 11 kW AC charging, so home and workplace charging speeds will be similar.
If you mostly charge at home or at work and care more about daily driving costs, the BMW iX1 is the more efficient choice at 170 Wh/km. Lower consumption means lower electricity bills over time.
Both have similar WLTP rated range at approximately 440 km. The best choice depends on how you charge, how far you drive, and personal preference.
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From Finn, engineer: Charging specs alone do not tell the full story. Real-world charging speed depends on battery temperature, state of charge, and the charger itself. These comparisons use manufacturer-published data. Approximate values only.
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