The EQS SUV is a three figure fully electric SUV. A third row seat is optional. It comes standard in a rear-drive, one-motor configuration which has an EPA estimated range of 305 miles. The 4Matic upgrade, which includes two motors, thus making it all-wheel drive, has an estimated range of 285 miles. Both configurations have a 9.6-kW onboard charger and use a large 107.8-kWh battery. They are compatible with maximum DC charging output of 200 kW. The 580 makes 536 horsepower, but even the 450 models with 355-hp are plenty quick, quiet and effortless. The ride is comfortable and serene and handling is surprisingly agile, partly due to the four-wheel steering. The brake pedal feels spongy, however. Controls are daunting at first but manageable. The EQS SUV boasts a full complement of active safety features, and the adaptive cruise control, combined with lane-keeping assistance, can execute lane changes on its own if the driver signals.