Compare the2027 Cadillac Lyriq VS 2027 Hyundai Ioniq 9

The Cadillac Lyriq has standard driver and front passenger side knee airbags mounted low on the dashboard. These airbags help prevent the driver and front passenger from sliding under their seatbelts or the main frontal airbags; this keeps them better positioned during a collision for maximum protection. Knee airbags also help keep the legs from striking the dashboard, preventing knee and leg injuries in the case of a serious frontal collision. The Ioniq 9 doesn’t offer a front passenger side knee airbag.

The Lyriq’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 Lyriq has standard Post-Collision Braking, which automatically apply 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.

Both the Lyriq and the Ioniq 9 have standard driver and passenger frontal airbags, front side-impact airbags, driver knee airbags, 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 National Highway Traffic Safety Administration does side impact tests on new vehicles. In this test, which crashes the vehicle into a post at 20 MPH, results indicate that the Cadillac Lyriq is safer than the Hyundai Ioniq 9:

	Lyriq	Ioniq 9
	Into Pole
STARS	5 Stars	4 Stars

New test not comparable to pre-2011 test results. More stars = Better. Lower test results = Better.

J.D. Power and Associates’ 2025 survey of the owners of three-year-old vehicles provides the long-term dependability statistics that show that Cadillac vehicles are more reliable than Hyundai vehicles. J.D. Power ranks Cadillac above average in long-term dependability. With 53 more problems per 100 vehicles in the first three years of ownership, Hyundai is rated below average.

The Lyriq has more powerful engines than the Ioniq 9:

	Horsepower	Torque
Lyriq electric motor	365 HP	325 lbs.-ft.
Lyriq electric motors	515 HP	450 lbs.-ft.
Lyriq-V electric motors	615 HP	650 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.

As tested in Consumer Reports the Cadillac Lyriq electric motors is faster than the Ioniq 9 SE/SEL electric motors:

	Lyriq	Ioniq 9
Zero to 60 MPH	5.1 sec	6 sec
45 to 65 MPH Passing	2.4 sec	3.1 sec
Quarter Mile	13.4 sec	14.7 sec
Speed in 1/4 Mile	112 MPH	94 MPH

As tested in Motor Trend the Lyriq-V electric motors is faster than the Ioniq 9 Limited/Calligraphy electric motors:

	Lyriq	Ioniq 9
Zero to 60 MPH	3.3 sec	4.4 sec
Quarter Mile	12 sec	13.1 sec
Speed in 1/4 Mile	113.1 MPH	104.8 MPH

On the EPA test cycle the Lyriq gets better mileage than the Ioniq 9:

			MPGe
Lyriq
	AWD	Electric Motors	98 city/80 hwy
Ioniq 9
	AWD	SE/SEL Electric Motors	98 city/78 hwy
		Limited/Calligraphy Electric Motors	91 city/79 hwy

The Lyriq can travel longer on a full charge than the Ioniq 9 Limited/Calligraphy (319 miles vs. 311 miles).

The Lyriq V Series’ launch control uses engine electronics to hold engine RPM’s precisely in order to provide the most stable and rapid acceleration possible, using all of the available traction. The Ioniq 9 doesn’t offer launch control.

For better stopping power the Lyriq-V’s brake rotors are larger than those on the Ioniq 9:

	Lyriq-V	Ioniq 9
Front Rotors	15.4 inches	14.2 inches

The Lyriq stops much shorter than the Ioniq 9:

	Lyriq	Ioniq 9
60 to 0 MPH	111 feet	126 feet	Motor Trend

For better traction, the Lyriq has larger standard tires than the Ioniq 9 (265/50R20 vs. 255/60R19).

The Lyriq’s standard tires provide better handling because they have a lower 50 series profile (height to width ratio) that provides a stiffer sidewall than the Ioniq 9 S/SE’s standard 60 series tires. The Lyriq’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 Lyriq has standard 20-inch wheels. Smaller 19-inch wheels are standard on the Ioniq 9 S/SE. The Lyriq’s optional 22-inch wheels are larger than the 21-inch wheels on the Ioniq 9 Limited/Calligraphy.

The Cadillac Lyriq’s wheels have 6 lugs for longer wheel bearing life, less chance of rotor warping and greater strength. The Hyundai Ioniq 9 only has 5 wheel lugs per wheel.

Having a flat tire is dangerous, inconvenient and expensive. The self-sealing tires standard on the Lyriq can automatically seal most punctures up to 3/16 of an inch, effectively preventing most flat tires. The Ioniq 9 doesn’t offer self-sealing tires.

The Lyriq offers an available 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.

The Lyriq -V Premium handles at .87 G’s, while the Ioniq 9 S pulls only .78 G’s of cornering force in a Motor Trend skidpad test.

The Lyriq -V Premium executes Motor Trend’s “Figure Eight” maneuver 2.5 seconds quicker than the Ioniq 9 S (25.2 seconds @ .79 average G’s vs. 27.7 seconds @ .62 average G’s).

For better maneuverability, the Lyriq’s turning circle is 1.4 feet tighter than the Ioniq 9’s (39.6 feet vs. 41 feet).

For greater off-road capability the Lyriq has a greater minimum ground clearance than the Ioniq 9 (7 vs. 6.9 inches), allowing the Lyriq to travel over rougher terrain without being stopped or damaged.

The Lyriq has a much larger cargo volume than the Ioniq 9 with its rear seat up (28 vs. 21.9 cubic feet).

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

The Lyriq’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.

The Lyriq’s standard Keyless Access allows you to unlock the doors from any outside door handle, open the cargo door, and start the vehicle, all without removing the key from 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 doors.

To help drivers avoid possible obstacles, the Lyriq has standard cornering lights to illuminate around corners when the turn signals are activated. The Ioniq 9 doesn’t offer cornering lights.

The Lyriq’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 Cadillac Lyriq 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 Lyriq has a standard heated steering wheel to take the chill out of steering on extremely cold winter days before the vehicle heater warms up. A heated steering wheel is only available on the Ioniq 9 SEL/Limited/Calligraphy.

The Cadillac Lyriq has a standard Homelink wireless remote control system for garage door operation and device management, conveniently located on the infotainment. 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.

The Cadillac Lyriq outsold the Hyundai Ioniq 9 by over four to one during 2025.