2027 Mercedes-Benz EQS Moves to 800 Volts and a 122 kWh Battery
The 2027 Mercedes-Benz EQS update brings 800-volt architecture and a 122 kWh battery. Earlier 118 kWh, 200 kW and 390-mile claims in this article mixed specifications.
Mercedes-Benz is trying to fix two of the biggest complaints about the EQS at the same time: the way it looks, and the way it stacks up on range.
For the 2027 model year, Mercedes is updating more than trim and styling. The official U.S. preview specifies 800-volt architecture and a 122 kWh battery.
The Electrical Upgrade Is the Real Story
The move to 800 volts and revised drive hardware is the meaningful change for road-trip use. The current U.S. preview also lists a two-speed transmission, MB.OS software and optional steer-by-wire.
As checked in October 2026, that U.S. page lists up to 430 kW DC charging, with a preliminary-specification disclaimer. This is the current regional preview, not a transcript of the April launch release. Charging output varies with battery temperature, state of charge and equipment.
They should not be read as EPA certifications or substituted with a conversion of European WLTP figures. Buyers need the final rating for their specific U.S. trim.
Mercedes Finally Softened the Weird Face
Let’s be honest: the original EQS never had a styling problem because it was futuristic. It had a styling problem because too many people thought it looked anonymous.
Mercedes seems to know that. The 2027 refresh gives the EQS a more upright, more familiar front-end treatment with a faux grille treatment that makes it look closer to the brand’s conventional flagship sedans. It is not suddenly aggressive or dramatic, but it does look more like a six-figure Mercedes and less like a rolling aerodynamics experiment.
That matters because luxury buyers do not just want efficiency. They also want presence.
Cabin Changes Are Small but Smart
The current preview describes a standard MBUX Hyperscreen with the Mercedes-Benz Operating System and optional steer-by-wire. It does not list a pillow package among the 2027 changes.
That is still a valid luxury brief. The EQS has never really been about driver involvement. It has been about making long-distance electric travel feel expensive in the right way.
Why This Refresh Matters Now
The EQS arrived as a technical showcase, but the luxury EV market has moved since then. Lucid has made range a bragging point. BMW has kept a more conventional luxury-sedan shape in the conversation. Even Mercedes’ own EQE has made some buyers question how much visual and financial separation the EQS really offers.
This update does not reinvent the car, but it does address the exact areas where the EQS was easiest to criticize. Revised electrical hardware, a larger stated battery, and a more recognizable Mercedes face are not flashy fixes. They are practical ones.
Mercedes’ U.S. preview anticipates dealer arrival later in 2026, which means Mercedes still has time to sharpen pricing and trim strategy before the updated car lands in showrooms.
The Motorlinks Take
This is the EQS update Mercedes needed to do.
The original car was clever, quiet, and seriously efficient for its size, but it always felt like a flagship that asked buyers to make too many emotional compromises. If the revised styling lands better in person, the 2027 EQS should be easier to sell as a proper electric S-Class alternative rather than just the most advanced thing in the showroom.
The bigger question is whether that will be enough to pull luxury EV shoppers away from Lucid, BMW, and whatever else arrives before the updated EQS hits dealers later in 2026. But on paper, this refresh makes the Mercedes flagship a lot easier to defend.