The Mercedes EQS is set to receive what is likely its most significant update since launch in 2026. The electric luxury sedan is moving to an 800-volt system, while the EQS 450+ is expected to deliver up to 926 kilometers of WLTP range and charging speeds of up to 350 kW. At the same time, one key question remains: can this major technical upgrade also solve the model's bigger problem so far – its lukewarm reception in the luxury segment?