The short answer? Like a really quiet Mercedes-Benz S-Class, which is already nearly silent.
In our time with the EQS 450+, we were duly impressed by every aspect of its on-road manners. Mercedes-Benz estimates it will accelerate to 60 mph in 5. 9 seconds and we're inclined to believe it. As in most EVs, acceleration is instant, and thanks to the standard Airmatic suspension — which replaces conventional springs with air chambers — the EQS' rear end doesn't squat or send the nose skyward when you plant your right foot to the floor. The sedan launches with a level attitude, eerie silence and an authoritative shove.
With increased power and traction, the EQS 580 4Matic is estimated to reach 60 mph in only 4.1 seconds. Those acceleration figures are slower than either the Tesla Model S or Porsche Taycan, but the EQS is in no way slow. If maximum performance is a necessity, the AMG EQS can zip from 0 to 60 mph in just 3.4 seconds, Mercedes says. That's similar to the Porsche Taycan 4S (3.6 seconds in our testing) but slower than the Tesla Model S Plaid (2.3 seconds).
With a curb weight of 5,597 pounds, the EQS 450+ is a heavy sedan, but on some very challenging switchbacks in the Swiss Alps, it sliced through hairpin turns like a much smaller and lighter vehicle. Placing the batteries under the floor certainly helps since it lowers the center of gravity to reduce body roll. Standard all-wheel steering also contributes. At lower speeds, the rear wheels can turn up to 10 degrees in the opposite direction as the front wheels, allowing the EQS to make a U-turn in a surprisingly small space. At higher speeds, the rear wheels turn in concert with the fronts, making for more graceful lane changes.
The brake pedal is rather soft, which is appropriate for a big luxury sedan, yet it manages to instill confidence. Drivers can adjust the intensity of brake regeneration (the amount of deceleration that results from lifting off the accelerator) by tapping on the steering wheel paddles. Many EV drivers enjoy maximum regeneration for so-called one-pedal driving, which can bring the vehicle to a stop without ever touching the brakes. You can easily switch to max regen by holding the + paddle on the steering wheel for a few seconds.