Mercedes EQS Drives 539 Miles on One Charge

The 2027 Mercedes-Benz EQS 450+ set a new Edmunds EV Range Test record for electric sedans, beating its EPA estimate.

Updated on Nov. 9, 2026 in Electric Vehicles

Isometric editorial illustration of a pearl white electric sedan parked beside a plain charging column on a flat highway lot, conveying an electric car's range performance. — Mercedes-Benz's 2027 EQS 450+ drove 539 miles on a single charge in Edmunds' EV Range Test, beating its 467-mile EPA estimate by 72 miles. AI Illustration. Upload story photo >

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The 2027 Mercedes-Benz EQS 450+ drove 539 miles without stopping to charge in the Edmunds EV Range Test, exceeding its EPA-estimated range of 467 miles by 72 miles. The result is the longest range for an electric sedan Edmunds has tested.

Why it matters

The result suggests that real-world electric sedan range can exceed official estimates under controlled test conditions, which matters for U.S. buyers weighing range anxiety against long-distance driving needs.

The 2027 EQS 450+ uses a 122 kWh battery and used 29.6 kWh per 100 miles during the test, compared with 34 kWh per 100 miles for the 2025 model. Its peak charging rate reached 350 kW, versus 208 kW for the older model.

The players

Mercedes-Benz

Mercedes-Benz is a German luxury automaker and a major global competitor in the electric vehicle segment.

Edmunds

Edmunds is an automotive research and information company known for its independent vehicle testing and reviews.

The details

The Edmunds EV Range Test uses a mix of 60% city and 40% highway driving at an average speed of 40 mph, with vehicles kept within 5 mph of the posted limit and climate control set to auto at 72 degrees. The new EQS added 100 miles of range in just over 7 minutes while sustaining an average charging rate of 222 kW.

Edmunds published its range test results for the 2027 EQS 450+ and the 2027 BMW iX3 50 xDrive last week.

Season Trajectory

The Edmunds result places the 2027 EQS 450+ against EPA-rated figures that consumers use to compare electric sedans. Independent long-range testing of this kind is increasingly used by buyers as a second data point beside official ratings.

Buyers considering an electric sedan can use independent range tests alongside EPA ratings when estimating how far a vehicle can travel between charges. The new EQS's fast charging rate also shortens the time needed for a long-distance stop.

The takeaway

Independent range testing can reveal how an electric vehicle performs beyond its official rating, which can help drivers plan longer trips with more confidence.