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Charging Comparison

Alfa Romeo Junior Elettrica vs Toyota bZ4X

Updated March 2026

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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 Toyota bZ4X has a higher peak charging speed at 150 kW DC, but the Alfa Romeo Junior Elettrica actually finishes the 10-80% charge faster (27 min vs 29 min) thanks to its smaller battery. The Alfa Romeo Junior Elettrica is more efficient at 159 Wh/km. The Toyota bZ4X offers more WLTP rated range at 528 km.

Side-by-Side Specs

Spec Alfa Romeo Junior Elettrica Toyota bZ4X
Battery (approx.) ~51 kWh ~71 kWh
WLTP range (rated) ~400 km ~528 km
Efficiency (approx.) ~159 Wh/km ~184 Wh/km
Max DC charging up to 100 kW up to 150 kW
10-80% charge time (approx.) ~27 min ~29 min
Max AC charging up to 11 kW up to 22 kW
DC connector CCS2 CCS2

Charging Speed

The Toyota bZ4X has a peak DC charging speed of 150 kW, which is roughly 50% faster than the Alfa Romeo Junior Elettrica at 100 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 Alfa Romeo Junior Elettrica finishes in about 27 minutes, which is 2 minutes quicker than the Toyota bZ4X at 29 minutes. On a road trip, that difference adds up over multiple stops.

Range and Efficiency

The Toyota bZ4X has a WLTP rated range of approximately 528 km, which is roughly 128 km more than the Alfa Romeo Junior Elettrica at approximately 400 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 Alfa Romeo Junior Elettrica consumes 159 Wh/km, compared to 184 Wh/km for the Toyota bZ4X. That means the Alfa Romeo Junior Elettrica 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 Toyota bZ4X has approximately 71 kWh of useable battery , while the Alfa Romeo Junior Elettrica has approximately 51 kWh.

Which One Should You Choose?

The Toyota bZ4X has the higher peak DC speed at up to 150 kW, but the Alfa Romeo Junior Elettrica actually finishes the 10-80% charge faster at approximately 27 minutes versus approximately 29 minutes. That is because the Alfa Romeo Junior Elettrica has a smaller battery to fill. On road trips, time at the plug matters more than peak power.

For AC charging (home wallboxes, workplace chargers, and public street chargers), the Toyota bZ4X supports up to 22 kW, compared to 11 kW for the Alfa Romeo Junior Elettrica. In Europe, many public chargers are 22 kW AC, so this difference can mean charging roughly twice as fast at those locations.

If you mostly charge at home or at work and care more about daily driving costs, the Alfa Romeo Junior Elettrica is the more efficient choice at 159 Wh/km. Lower consumption means lower electricity bills over time.

For maximum range between charges, the Toyota bZ4X has a WLTP rated range of approximately 528 km, which is roughly 128 km more. Both are capable EVs. The best choice depends on how you charge and how far you drive.

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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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