Real-World Range Test Results
The overhauled 2027 Mercedes-Benz EQS 450+ recently achieved 539 miles on a single charge during an Edmunds EV Range Test. This performance exceeded the vehicle’s EPA-estimated range of up to 467 miles by 72 miles. The test results establish the model as the longest-range electric sedan tested by Edmunds to date.
Battery and Charging Specifications
The vehicle relies on a 122 kWh battery and an 800V electrical architecture. During testing, the 2027 Mercedes EQS 450+ recorded a peak charging rate of 350 kW, sustaining an average of 222 kW throughout the session. The model added 825 miles of range in an hour and 100 miles in just over 7 minutes.
Efficiency Performance
In addition to total distance, efficiency metrics showed improvements over the previous model year. The new EQS used 29.6 kWh per 100 miles during the test. For comparison, the 2025 Mercedes EQS 450+ covered 464 miles and used 34 kWh per 100 miles during the same test conditions.
Practical Takeaway
For buyers evaluating long-distance capabilities, real-world testing demonstrates that updated battery capacities and 800V architectures can substantially exceed standard EPA projections while delivering faster replenishment speeds at compatible DC fast chargers.
Source: Original report