Compare the2026 Mercedes EQS SUVVS 2026 Hyundai Ioniq 9

The EQS SUV’s pre-crash front seatbelts will tighten automatically in the event the vehicle detects an impending crash, improving protection against injury significantly. The Ioniq 9 doesn’t offer pre-crash pretensioners.

The EQS SUV’s standard pretensioning seatbelts also sense rear collisions and remove slack from the seatbelts to help protect the occupants from whiplash and other injuries. The Ioniq 9 doesn’t offer a whiplash protection system.

The EQS SUV has a standard Post Collision Brake, which automatically applies the brakes in the event of a crash to help prevent secondary collisions and prevent further injuries. The Ioniq 9 doesn’t offer a post collision braking system: in the event of a collision that triggers the airbags, more collisions are possible without the protection of airbags that may have already deployed.

To provide maximum traction and stability on all roads, All-Wheel Drive is standard on the EQS SUV. But it costs extra on the Ioniq 9.

Earlier warning of stopped traffic, traffic signals, dangerous road conditions, weather, or accidents, can keep driver's safer and prevent crashes. The EQS SUV has Car-to-X Communication, a system that seamlessly communicates important warnings to the driver about impending danger, if they're available. The Ioniq 9 doesn’t offer a system that can receive automated systems from infrastructure or other vehicles.

Both the EQS SUV and the Ioniq 9 have standard driver and passenger frontal airbags, front and rear side-impact airbags, driver knee airbags, front seat center airbag, side-impact head airbags, front and rear seatbelt pretensioners, height adjustable front shoulder belts, four-wheel antilock brakes, traction control, electronic stability systems to prevent skidding, crash mitigating brakes, daytime running lights, lane departure warning systems, blind spot warning systems, rearview cameras, rear cross-path warning and driver alert monitors.

The EQS SUV has more powerful engines than the Ioniq 9:

	Horsepower	Torque
EQS SUV 400 4MATIC electric motors	355 HP	590 lbs.-ft.
EQS SUV 550 4MATIC electric motors	536 HP	633 lbs.-ft.
Maybach EQS 680 electric motors	649 HP	700 lbs.-ft.
Ioniq 9 S electric motor	215 HP	258 lbs.-ft.
Ioniq 9 SE/SEL electric motors	303 HP	446 lbs.-ft.
Ioniq 9 Limited/Calligraphy electric motors	422 HP	516 lbs.-ft.

The EQS SUV can travel longer on a full charge than the Ioniq 9 on a full charge:

			Miles
EQS SUV
	AWD	550 4MATIC Electric Motors	317 miles
		400 4MATIC Electric Motors	312 miles
Ioniq 9
	AWD	Limited/Calligraphy Electric Motors	311 miles

For better stopping power the EQS SUV’s brake rotors are larger than those on the Ioniq 9:

	EQS SUV	Ioniq 9
Front Rotors	16.3 inches	14.2 inches
Rear Rotors	14.9 inches	13.6 inches

For better traction, the EQS SUV has larger standard tires than the Ioniq 9 (275/45R21 vs. 255/60R19).

The EQS SUV’s standard tires provide better handling because they have a lower 45 series profile (height to width ratio) that provides a stiffer sidewall than the Ioniq 9 S/SE’s standard 60 series tires. The EQS SUV’s optional tires have a lower 40 series profile than the Ioniq 9 Limited/Calligraphy’s 45 series tires.

For better ride, handling and brake cooling the EQS SUV has standard 21-inch wheels. Smaller 19-inch wheels are standard on the Ioniq 9 S/SE. The EQS SUV’s optional 22-inch wheels are larger than the 21-inch wheels on the Ioniq 9 Limited/Calligraphy.

Changing a flat tire near traffic can be dangerous and inconvenient. The run-flat tires available on the EQS SUV can be driven up to 50 miles without any air pressure, allowing you to drive to a service station for a repair. The Ioniq 9 doesn’t offer run-flat tires.

The front and rear suspension of the EQS SUV uses air springs for a smoother, controlled ride than the Ioniq 9, which uses coil springs. Air springs maintain proper ride height and ride more smoothly.

The EQS SUV has a standard driver-adjustable suspension system. It allows the driver to choose between an extra-supple ride, reducing fatigue on long trips, or a sport setting, which allows maximum control for tricky roads or off-road. The Ioniq 9’s suspension doesn’t offer adjustable shock absorbers.

For a smoother ride and more stable handling, the EQS SUV’s wheelbase is 3.2 inches longer than on the Ioniq 9 (126.4 inches vs. 123.2 inches).

The EQS SUV handles at .86 G’s, while the Ioniq 9 S pulls only .78 G’s of cornering force in a Motor Trend skidpad test.

The EQS SUV executes Motor Trend’s “Figure Eight” maneuver 1.7 seconds quicker than the Ioniq 9 S (26 seconds @ .7 average G’s vs. 27.7 seconds @ .62 average G’s).

For better maneuverability, the Maybach EQS 680’s turning circle is 5 feet tighter than the Ioniq 9’s (36 feet vs. 41 feet). The EQS SUV’s turning circle is 2 feet tighter than the Ioniq 9’s (39 feet vs. 41 feet).

For greater off-road capability the EQS SUV has a greater minimum ground clearance than the Ioniq 9 (7.3 vs. 6.9 inches), allowing the EQS SUV to travel over rougher terrain without being stopped or damaged. The EQS SUV 550 4MATIC’s minimum ground clearance is .9 inch higher than on the Ioniq 9 (7.8 vs. 6.9 inches).

The EQS SUV has a larger cargo volume than the Ioniq 9 with its rear seat up (22.7 vs. 21.9 cubic feet).

An ASSYST PLUS is standard on the EQS SUV to save the owner time and money by calculating maintenance intervals based on odometer mileage. This takes the guesswork out of keeping your vehicle in top condition and helps it last longer. Hyundai doesn’t offer a maintenance reminder on the Ioniq 9.

Unlike the driver-only memory system in the Ioniq 9 Limited/Calligraphy, the EQS SUV has standard driver and passenger memory, so that when drivers switch, the memory setting adjusts the driver’s seat, steering wheel position, outside mirror angle and climate settings and the front passenger seat also adjusts to the new passenger’s preset preferences.

The EQS SUV’s front and rear power windows all open or close fully with one touch of the switches, making it more convenient at drive-up windows and toll booths, or when talking with someone outside the car. The Ioniq 9’s standard rear power window switches have to be held the entire time to open or close them fully.

If the windows are left open on the EQS SUV the driver can close all of them at the outside door handle or from a distance using the remote. On a hot day the driver can also lower the windows the same way. The driver of the Ioniq 9 can only close the windows from inside the vehicle, with the ignition on.

The EQS SUV’s standard Keyless-Go allow you to unlock the doors from any outside door handle, open the cargo door, and start the vehicle, all without removing the key from the pocket or purse. Proximity Key standard on the Ioniq 9 doesn’t offer a sensor on the rear doors, so you’ll have to reach a front handle to unlock the rear door.

The EQS SUV’s optional power side swing out doors make it much easier to load and unload kids and cargo. One touch opens the door, before you even get to the sport utility. The Ioniq 9 doesn’t offer a power rear door.

Heated windshield washer fluid is optional on the EQS SUV to defrost the washer nozzles and quickly clear ice and frost from the windshield without scraping. The Ioniq 9 doesn’t offer heated windshield washer fluid.

To help drivers avoid possible obstacles, the EQS SUV has standard cornering lights to illuminate around corners when the turn signals are activated. The Ioniq 9 doesn’t offer cornering lights. The EQS SUV also has standard adaptive headlights to illuminate around corners automatically by reading vehicle speed and steering wheel angle.

To better shield the driver and front passenger’s vision, the EQS SUV Maybach has standard dual-element sun visors that can block glare from two directions simultaneously. The Ioniq 9 doesn’t offer secondary sun visors.

The EQS SUV’s standard rear and side view mirrors have an automatic dimming feature. These mirrors can be set to automatically darken quickly when headlights shine on them, keeping following vehicles from blinding or distracting the driver. The Ioniq 9 offers an automatic rear view mirror, but its side mirrors don’t dim.

The Mercedes EQS SUV has power folding mirrors that offer unparalleled convenience while maneuvering in tight places or parked. With the mirrors folded it’s easier to walk past and help prevent parking damage. The mirrors can be quickly unfolded when the driver is ready to leave. Power folding mirrors are only offered on the Ioniq 9 SEL/Limited/Calligraphy.

The EQS SUV has standard heated front and middle row seats and optional heated third row seats, which keep the driver and passengers extremely comfortable in the winter. Hyundai doesn’t offer heated seats in the third row of the Ioniq 9.

Both the EQS SUV and the Ioniq 9 offer available massaging front seats. The EQS SUV Maybach also has standard massaging second row seats in order to maximize comfort and eliminate fatigue on long trips. Massaging second row seats aren’t available in the Ioniq 9.

The Mercedes EQS SUV has a standard Homelink wireless remote control system for garage door operation and device management, conveniently located on the rear view mirror. Homelink® eliminates the need for separate garage door openers and associated risks of losing, breaking, or having dead batteries. Homelink® is only available on the Ioniq 9 SEL/Limited/Calligraphy.

Both the Mercedes EQS SUV and the Hyundai Ioniq 9 have a standard Qi wireless phone charging system in the front seat. To easily keep personal devices charged in the second row seat, without cables tangling and wearing out, the EQS SUV also has a standard wireless charging system in the second row seat. The Ioniq 9 does not.