Mercedes-Benz has unveiled a significantly updated version of its flagship EQS electric sedan, introducing an 800-volt architecture, longer range, and a new software platform. While officially positioned as an update, the scale of changes—covering more than a quarter of the vehicle’s components—makes it closer to a full redesign than a typical mid-cycle refresh.
The headline figure is a WLTP range of up to 926 km (575 miles) on the EQS 450+, a roughly 13% improvement over the previous model. In real-world terms, that likely translates to over 400 miles under EPA standards, placing it among the longest-range luxury EVs currently available.
Faster Charging, More Practical Range
At the center of the upgrade is the move to an 800V electrical system, a technology increasingly used in high-end EVs to enable faster charging. The new EQS supports up to 350 kW DC charging, allowing it to add nearly 200 miles of range in about 10 minutes under ideal conditions.
More importantly, Mercedes has addressed compatibility with existing infrastructure. On older 400V chargers, the battery can split into two sections that charge simultaneously, maintaining relatively fast speeds even without next-generation hardware.
In everyday use, that means less waiting at chargers—and more flexibility depending on where you plug in.
Efficiency Gains Beyond Battery Size
The battery itself grows slightly, from 118 kWh to 122 kWh usable capacity, but much of the range improvement comes from efficiency gains rather than just size. Mercedes has introduced new battery chemistry using silicon-enhanced anodes, which improves energy density without increasing physical dimensions.
There are also upgrades to the electric drive units. On all-wheel-drive models, the front motor can disengage when not needed, reducing energy consumption. A new two-speed gearbox on the rear axle balances acceleration and highway efficiency.
Regenerative braking has also been strengthened, now capable of handling most deceleration without using traditional brakes—something drivers will notice in smoother, one-pedal-style driving.
Steer-by-Wire and a Software-First Cabin
One of the most notable changes is the introduction of steer-by-wire, removing the mechanical link between the steering wheel and the front wheels. Instead, inputs are transmitted electronically, allowing for a flatter steering wheel and more flexible cabin design.
This system will arrive shortly after launch and works alongside rear-wheel steering to improve maneuverability and stability.
Inside, the EQS runs on the new MB.OS platform, which integrates vehicle systems with cloud connectivity and over-the-air updates. The infotainment experience—powered by an updated MBUX system—leans further into AI, with voice interaction designed to handle more natural, multi-step conversations.
Features like augmented-reality navigation and a customizable interface aim to make the car feel more like a connected device than a traditional vehicle.
Competitive Positioning
Mercedes is also adjusting pricing and lineup strategy. A new entry-level EQS 400 lowers the starting point, positioning the model more directly against rivals like the BMW i7.
Compared to competitors, the EQS now stands out most in range and charging performance, while maintaining its focus on comfort and technology. However, some rivals may still lead in areas like driving dynamics or brand perception in certain markets.
Pros and Cons
Pros:
- Class-leading range for a luxury EV
- 800V architecture enables ultra-fast charging
- Improved efficiency through new drivetrain and battery tech
- Advanced software platform with AI integration
- Steer-by-wire opens new design possibilities
Cons:
- Some features (like steer-by-wire and V2G) arrive after launch
- Real-world charging depends on infrastructure availability
- Incremental design changes may not appeal to all buyers
- Complexity of new systems may raise long-term reliability questions
The Bigger Picture
The updated EQS reflects a broader shift in the EV market, where gains are increasingly coming from efficiency, software, and charging speed rather than just larger batteries. Mercedes appears to be focusing on making the EV experience more seamless and less dependent on compromises.
Conclusion
The new EQS is less about reinvention and more about refinement at scale—but the result is meaningful. With improved range, faster charging, and a stronger software foundation, Mercedes has addressed several of the original model’s limitations.
If these upgrades perform as expected in real-world conditions, the EQS moves closer to what a flagship electric sedan is supposed to be: not just advanced, but genuinely practical for everyday use.
