Charging Comparison
Mercedes-Benz EQB vs Smart #3
Compared variants: 250+ vs Premium
Updated April 2026
Data shown is approximate and based on publicly available specifications and real-world estimates. For models with multiple battery versions, this page compares the variants listed above. Actual performance varies with driving conditions, temperature, state of charge, and charger hardware. Always check the manufacturer specification page and your vehicle's manual for official figures. EVcourse is not affiliated with any vehicle manufacturer.
Quick verdict
The Smart #3 has the higher published DC charging figure at 150 kW, while the Mercedes-Benz EQB is more efficient at approximately 170 Wh/km. The Mercedes-Benz EQB offers more WLTP rated range at 536 km.
Side-by-Side Specs
| Spec | Mercedes-Benz EQB | Smart #3 |
|---|---|---|
| Compared variant | 250+ | Premium |
| Battery (approx.) | ~70.5 kWh | ~62 kWh |
| WLTP range (rated) | ~536 km | ~415 km |
| Efficiency (approx.) | ~170 Wh/km | ~175 Wh/km |
| DC fast charging (published) | up to 102 kW | up to 150 kW |
| 10-80% charge time (approx.) | ~35 min | ~28 min |
| Max AC charging | up to 11 kW (22 kW optional) | up to 22 kW |
| DC connector | CCS2 | CCS2 |
Charging Speed
The Smart #3 has the higher published DC charging figure at 150 kW, which is roughly 47% higher than the Mercedes-Benz EQB at 102 kW. In practice, that figure 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 published fast-charge window, the Smart #3 is listed at about 28 minutes, which is 7 minutes quicker than the Mercedes-Benz EQB at 35 minutes. On a road trip, that difference adds up over multiple stops.
Range and Efficiency
The Mercedes-Benz EQB has a WLTP rated range of approximately 536 km, which is roughly 121 km more than the Smart #3 at approximately 415 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 Mercedes-Benz EQB consumes 170 Wh/km, compared to 175 Wh/km for the Smart #3. That means the Mercedes-Benz EQB 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 Mercedes-Benz EQB has approximately 70.5 kWh of useable battery , while the Smart #3 has approximately 62 kWh.
Which One Should You Choose?
If fast charging is your priority, the Smart #3 has the higher published DC figure (up to 150 kW) and the shorter published charge time at approximately 28 minutes. For long road trips, published stop time matters more than the headline kW number alone.
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 Mercedes-Benz EQB is the more efficient choice at 170 Wh/km. Lower consumption means lower electricity bills over time.
For maximum range between charges, the Mercedes-Benz EQB has a WLTP rated range of approximately 536 km, which is roughly 121 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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