Mercedes-Benz EQS and AMG EQS Beat EPA Ratings in Our Range Test

The Mercedes-Benz EQS580 and AMG EQS beat EPA ratings in the 75-mph range test, a feat only five other electric cars have achieved.

The 516-horsepower EQS580 went 10 miles more than its 340-mile estimate, and the 751-horsepower AMG EQS went 13 miles further than its 277-mile estimate.

There are many influencing factors, but the most important one is that we suspect Mercedes – like other German brands that have done so – is conservative with its range estimates for electric vehicles.

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    It’s rare for an electric vehicle to beat the EPA’s range estimate in our real-world test of 75 mph. How rare? Well, we’ve run range tests on over 50 EVs so far and so far only seven – about 13 percent – have gone further than advertised. The last to join this select company were the Mercedes-Benz EQS580 and Mercedes-AMG EQS, which beat their combined EPA numbers by 10 and 13 miles, respectively.

    Both Mercedes models have an electric motor that powers each axle and a 107.8 kWh battery. The 516-horsepower EQS580 is expected to travel 340 miles on a full charge, and the 751-horsepower AMG EQS is expected to reach 277 miles, according to the EPA. For failed mathematicians, there is a difference of 63 miles. And in our highway range test, we saw about the same gap, with the EQS580 traveling 350 miles and the AMG EQS 290 miles.

    The percentage of EQS models from the EPA range achieved was 103 and 105 percent, respectively, but it’s notable because very few electric vehicles have done so since we first began testing the highway suite in 2016. Other top performers currently include Audi e-tron Sportback, Audi e-tron GT (and RS variant), base model Porsche Taycan, and Taycan 4S Cross Turismo. Of these, only Porsche cars achieved a higher percentage of their EPA ranges than Benz cars – 112 percent for the wagon and 124 percent for the sedan.

    Mercedes-Benz 2022 eqs580 4matic

    EQS580
    Andy Headrickcar and driver

    2022 Mercedes AMG EQS 4MATIC

    AMG EQS
    Michael Cimaricar and driver

    What is noteworthy about this collection is that they all come from German brands. What’s equally remarkable is that the Lucid Air and Tesla Model S are missing, although Tesla was the first to break 300 miles of real-world range after a 320-mile score, and Lucid was the first to break the 400-mile mark after traveling 410 miles at a speed of 75 miles per hour. The truth is that both the 2022 Lucid Air Grand Touring and the 2021 Tesla Model S Long Range we tested were below their EPA’s range estimates. Lucid missed its 516-mile rating by 106 miles, which is only 80 percent of the EPA’s estimate. Tesla missed its 412-mile rating by 92 miles—just completing 78 percent of its EPA range.

    So, what’s the difference between Germans who outgrew their EPA-labeled ranges and Americans who don’t? Simply put, we suspect the former group is more conservative than the latter when it comes to estimating how far their electric vehicles will go with full batteries. Specifically with the dual EQS, its net capacity of 107.8 kWh is only 3.9 kWh more than the Long Range Model S (103.9 kWh) and 4.2 kWh less than the Air Grand Touring (112.0 kWh) per hour). However, Mercedes’ combined EPA rating for the EQS580 is 176 miles (about 34 percent) less than the Lucid’s and 72 miles (about 17 percent) than the Tesla. The gaps are wider between the American models and the AMG EQS, but you get the picture.

    Of course, other things played a role in Benz cars outperforming their EPA-rated ranges, but it’s hard to pin down each contributing factor. Both models are extremely slippery thanks to their aerodynamically-focused front end design that helps deliver incredibly low drag coefficients from 0.20 for the EQS580 and 0.23 for the AMG EQS.

    Tires also have a huge impact on the range. While our AMG version wore Michelin Pilot Sport EV rubber designed for sporty handling and low rolling resistance, the EQS580 wore surprisingly goodyear Eagle F1 Assymmetric 5 summer tires resident Beat the EPA rating. Perhaps there is a way to squeeze in a bigger scale than a luxury Mercedes electric barge? Either way, for now, Benzes is part of an exclusive club of range rackets.

    track club

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