BMW i4 vs Mercedes-Benz EQS

Side-by-Side Specs

Charging Speed

The BMW i4 has a peak DC charging speed of 207 kW, which is roughly 4% faster than the Mercedes-Benz EQS at 200 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.

Both cars use 400V architecture, so their charging curves should follow similar patterns. The difference in peak speed comes down to battery chemistry, thermal management, and the onboard charger design.

For the 10-80% charge (the most common DC fast charging scenario), the BMW i4 finishes in about 32 minutes, which is 1 minutes quicker than the Mercedes-Benz EQS at 33 minutes. On a road trip, that difference adds up over multiple stops.

Range and Efficiency

The Mercedes-Benz EQS offers 685 km of real-world range, which is 170 km more than the BMW i4 at 515 km. These are real-world estimates, not WLTP numbers. Expect your actual range to vary with speed, weather, terrain, and driving style.

Efficiency matters more than battery size for daily driving costs. The BMW i4 consumes 157 Wh/km, compared to 172 Wh/km for the Mercedes-Benz EQS. That means the BMW i4 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 EQS has a 118 kWh useable battery , while the BMW i4 has 80.7 kWh.

Cold Weather Charging

Both the BMW i4 and Mercedes-Benz EQS come with a heat pump as standard, which helps preserve range in cold weather by heating the cabin more efficiently.

Battery preconditioning is equally important for winter DC fast charging. When the battery is cold, charging speeds drop significantly. Both cars support preconditioning, which warms the battery before you arrive at a fast charger so you get closer to peak charging speed.

In cold conditions, expect 20-35% range loss compared to ideal weather. Cars with both a heat pump and preconditioning typically handle winter better overall.

Which One Should You Choose?

If fast charging speed is your priority, the BMW i4 has the edge with 207 kW peak DC and a 32-minute 10-80% time. For long road trips with multiple charging stops, that faster turnaround makes a real difference.

If you mostly charge at home or at work and care more about daily driving costs, the BMW i4 is the more efficient choice at 157 Wh/km. Lower consumption means lower electricity bills over time.

For maximum range between charges, the Mercedes-Benz EQS gives you 685 km of real-world range, which is 170 km more. Both are capable EVs. The best choice depends on how you charge and how far you drive.