A struggling flagship gets a substantial technical update

Mercedes-Benz has taken another shot at its flagship electric sedan, unveiling a refreshed 2027 EQS with changes aimed squarely at the complaints that have dogged the model since launch. The update combines improved range and charging performance with a more attention-seeking look and a new steer-by-wire system paired with a yoke-style steering control.

The EQS has had a difficult run in the market. According to the source material, dealers questioned whether the vehicle felt aspirational enough, discounts grew steep, and production for the U.S. market was paused before later resuming. Against that backdrop, this midcycle refresh looks less like a cosmetic tune-up and more like an attempt to reset the car’s proposition.

Mercedes is clearly trying to answer two different problems at once. One is technical: make the EQS more competitive as an EV by improving efficiency, charging speed, and usable range. The other is emotional: make it feel more distinctive and more obviously premium in a segment where image matters as much as specification.

What changed under the skin

The biggest improvements are mechanical and electrical. When the 2027 EQS reaches the U.S. later this year, its battery capacity will rise from 118 kWh to 122 kWh. The pack is not physically larger; Mercedes says it has become more energy dense. That modest increase in stored energy is paired with broader efficiency changes meant to stretch distance more meaningfully than the raw battery gain alone would suggest.

The result, according to the report, is an expected increase from today’s EPA-estimated 385 miles of range to about 420 miles on a full charge. In a large luxury EV, that kind of improvement is important. It does not just sharpen a spec-sheet number. It reduces charging stops on long trips and gives the vehicle stronger standing in a market where range remains a shorthand for technical credibility.

Mercedes is also adding a two-speed transmission, a feature it has already introduced on newer electric models such as the CLA and GLC-Class EVs. Different gear ratios at different speeds can improve efficiency and drivability, and in this case the company is using that hardware to help the EQS do a better job both at cruising and at extracting value from its battery.

The updated car also gets new electric motors rated at either 544 or 585 horsepower depending on configuration. Power alone is not the headline here, but the new motors matter because they are described as more economical as well. Mercedes is not simply chasing larger numbers; it is trying to present the EQS as a more polished long-distance electric platform.