Mercedes-Benz EQS 450+ 2027 drove 539 miles on one charge in the Edmunds EV Range Test
In the Edmunds EV Range Test, the 2027 EQS 450+ with a 122 kWh battery beat its 467-mile EPA estimate by 72 miles and used less energy per mile than the 2025 model.
In the Edmunds EV Range Test, the 2027 Mercedes-Benz EQS 450+ covered 539 miles without stopping to charge, electrek.co reports electrek.co
electrek.coelectrek.coOpen source ↗. Mercedes-Benz overhauled the EQS electric sedan for this model year, including a bigger battery and an 800V electrical architecture. The 2027 EQS 450+ has a 122 kWh battery and an EPA-estimated range of up to 467 miles.
Range and efficiency in the test
The EQS exceeded its own EPA estimate by 72 miles. It is the longest-range electric sedan Edmunds has tested, ahead of the Lucid Air, the first EV to pass 500 miles. Only the Cadillac Escalade IQ went farther: 558 miles from a 205 kWh battery.
Energy use was also better than the official figure. The new EQS consumed 29.6 kWh per 100 miles against an EPA estimate of 28 kWh per 100 miles. In the same test, the 2025 EQS 450+ covered 464 miles and used 34 kWh per 100 miles.
The test is meant to approximate everyday driving: 60% city and 40% highway, an average speed of 40 mph, speed within 5 mph of the posted limit, and climate control on auto at 72 degrees electrek.co
electrek.coelectrek.coOpen source ↗.
Charging and how much range drivers want
Edmunds recorded a peak charging rate of 350 kW, in line with Mercedes' estimate, and an average of 222 kW over the session. The older EQS peaked at 208 kW and averaged 175 kW. The new car added 825 miles of range in an hour and 100 miles in just over 7 minutes, nearly twice the rate of the 2025 model year.
Electrek also cites a BMW survey described as nationally representative. In it, 73% of respondents considered 25, 50 or 75 miles enough for daily driving, yet 42% said they would need at least 300 miles of range before considering an EV. Another 53% said they would be more likely to consider an EV that could add about 150 miles in around 10 minutes.
The same Edmunds test covered other models. The 2027 BMW iX3 50 xDrive drove 436 miles against an EPA estimate of 392 miles, using 28.3 kWh per 100 miles against 32 kWh per 100 miles officially electrek.co
electrek.coelectrek.coOpen source ↗. The 2027 Volvo EX60 drove 352 miles, and the 2027 Mercedes-Benz GLC Electric covered 392 miles.
