Compare the2025 Audi S6 e-tronVS 2025 Mercedes EQS

Both the S6 e-tron and EQS have child safety locks to prevent children from opening the rear doors. The S6 e-tron has power child safety locks, allowing the driver to activate and deactivate them from the driver's seat and to know when they're engaged. The EQS’ child locks have to be individually engaged at each rear door with a manual switch. The driver can’t know the status of the locks without opening the doors and checking them.

In the past twenty years hundreds of infants and young children have died after being left in vehicles, usually by accident. When turning the vehicle off, drivers of the S6 e-tron are reminded to check the back seat when a sensor determines the back seat is occupied. The EQS doesn’t offer a back seat reminder.

To provide maximum traction and stability on all roads, All-Wheel Drive is standard on the S6 e-tron. But it costs extra on the EQS.

The Audi S6 e-tron offers an optional Top View Cameras and it also offers an optional rear camera washer to make backing always safe, regardless of road dirt or grime, while the Mercedes EQS doesn’t offer a camera washer, requiring manual cleaning.

Both the S6 e-tron and the EQS have standard driver and passenger frontal airbags, front and rear side-impact airbags, driver and front passenger knee airbags, side-impact head airbags, front seatbelt pretensioners, height adjustable front shoulder belts, four-wheel antilock brakes, traction control, electronic stability systems to prevent skidding, crash mitigating brakes, post-collision automatic braking systems, daytime running lights, lane departure warning systems, blind spot warning systems, rearview cameras, rear cross-path warning, driver alert monitors and available around view monitors.

The S6 e-tron’s corrosion warranty is 7 years longer than the EQS’ (12 vs. 5 years).

The S6 e-tron’s electric motors produces 208 more horsepower (543 vs. 335) than the EQS 450 4MATIC’s standard electric motors. The S6 e-tron’s electric motors produces 188 more horsepower (543 vs. 355) than the EQS 450+’s standard electric motor. The S6 e-tron’s electric motors produces 7 more horsepower (543 vs. 536) than the EQS 580 4MATIC’s standard electric motors.

On the EPA test cycle the S6 e-tron gets better mileage than the EQS:

The S6 e-tron Quattro can travel longer on a full charge than the AMG EQS (324 miles vs. 315 miles).

For better stopping power the S6 e-tron’s standard front brake rotors are larger than those on the EQS:

For better traction and acceleration, the S6 e-tron has larger standard rear tires than the EQS (265/40R20 vs. 255/45R20).

The S6 e-tron’s standard 265/40R20 rear tires provide better handling because they have a lower 40 series profile (height to width ratio) that provides a stiffer sidewall than the EQS’ standard 45 series tires.

The Audi S6 e-tron may be more efficient, handle and accelerate better because it weighs about 250 to 600 pounds less than the Mercedes EQS.

The S6 e-tron is 1 foot, 1.7 inches shorter than the EQS, making the S6 e-tron easier to handle, maneuver and park in tight spaces.

The S6 e-tron has a much larger trunk than the EQS with its rear seat up (26 vs. 22 cubic feet).