Global EV Comparison: Mercedes B-Class 250e vs BMW iX3 Gen 1

Side-by-side comparison of all specifications in metric units (km, kg). To see imperial units (mi, lb), switch website version to USA.
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General Info

Since both vehicles have been discontinued, they are now only available on the used car market. You can get the Mercedes B 250e (2014-2017) for as low as €11990, while the BMW iX3 Gen 1 (2020-2021) begins at €30900.

The Mercedes B 250e (2014-2017) is a Hatchback, whereas the BMW iX3 Gen 1 (2020-2021) is a SUV.

Property Mercedes B-Class 250e BMW iX3 Gen 1
Years of Production 2014-2017 2020-2021
Current Status Discontinued Discontinued
Country of Manufacture Germany, Hungary China
Body Style Hatchback SUV
Market Availability EU, USA EU
Price Europe (Used) €11990 €30900
GCC Score 4.6 6.6

Range and Efficiency

The BMW iX3 Gen 1 (2020-2021) boasts a greater real-world range, a larger battery, and superior energy efficiency compared to the Mercedes B 250e (2014-2017).

Property Mercedes B-Class 250e BMW iX3 Gen 1
Range (EPA) 140 km - Range (EPA)
Range (WLTP) - Range (WLTP) 460 km
Range (GCC) 142 km 391 km
Battery Capacity (Nominal) 31 kWh 80 kWh
Battery Capacity (Usable) 28 kWh 74 kWh
Efficiency per 100 km 19.7 kWh/100 km 18.9 kWh/100 km
Efficiency per kWh 5.07 km/kWh 5.28 km/kWh
Range and Efficiency Score 4.1 6.5

Charging

Both vehicles utilize a standard 400-volt architecture.

The Mercedes B 250e (2014-2017) has no DC fast charging capability, whereas the BMW iX3 Gen 1 (2020-2021) can charge at up to 155 kW.

The BMW iX3 Gen 1 (2020-2021) features a more powerful on-board charger, supporting a maximum AC charging power of 11 kW, whereas the Mercedes B 250e (2014-2017) is limited to 9.6 kW.

Property Mercedes B-Class 250e BMW iX3 Gen 1
Max Charging Power (AC) 9.6 kW 11 kW
Max Charging Power (DC) - Max Charging Power (DC) 155 kW
Architecture 400 V 400 V
Charge Port Type 2 (Mennekes) CCS Type 2
Charging Score 3.9 6.5

Performance

The BMW iX3 Gen 1 (2020-2021) is rear-wheel drive, while the Mercedes B 250e (2014-2017) offers a front-wheel drive system.

The BMW iX3 Gen 1 (2020-2021) boasts greater motor power and accelerates faster from 0 to 100 km/h.

Property Mercedes B-Class 250e BMW iX3 Gen 1
Drive Type FWD RWD
Motor Type PMSM PMSM
Motor Power (kW) 132 kW 210 kW
Motor Power (hp) 177 hp 282 hp
Motor Torque 340 Nm 400 Nm
0-100 km/h 7.9 s 6.8 s
Top Speed 160 km/h 180 km/h
Performance Score 3.4 4.4

Dimensions

The BMW iX3 Gen 1 (2020-2021) is longer, wider, and taller.

The BMW iX3 Gen 1 (2020-2021) boasts a more extended wheelbase.

Property Mercedes B-Class 250e BMW iX3 Gen 1
Length 4359 mm 4734 mm
Width (with Mirrors) 2010 mm 2138 mm
Width (w/o Mirrors) 1786 mm 1891 mm
Height 1557 mm 1668 mm
Wheelbase 2699 mm 2864 mm

Cargo and Towing

The BMW iX3 Gen 1 (2020-2021) provides more cargo capacity, featuring both a larger trunk and more space with the rear seats folded.

Neither car is equipped with a frunk (front trunk).

The BMW iX3 Gen 1 (2020-2021) has a towing capacity of up to 750 kg, whereas the Mercedes B 250e (2014-2017) is not officially rated for towing in the EU.

Property Mercedes B-Class 250e BMW iX3 Gen 1
Number of Seats 5 5
Curb Weight 1725 kg 2260 kg
Cargo Volume (Trunk) 501 l 510 l
Cargo Volume (Max) 1456 l 1560 l
Cargo Volume (Frunk) - Cargo Volume (Frunk) - Cargo Volume (Frunk)
Towing Capacity - Towing Capacity 750 kg
Cargo and Towing Score 4.5 7.3
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