Compare the2027 Hyundai Ioniq 5 VS 2026 Lexus RZ

Both the Ioniq 5 and RZ have child safety locks to prevent children from opening the rear doors. The Ioniq 5 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 RZ’s 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 a Vehicle-to-Vehicle Frontal Crash Prevention 2.0 test conducted by the Insurance Institute for Highway Safety (IIHS), the Hyundai Ioniq 5 achieved a “Acceptable” rating - the second highest possible - for its performance in forward collision warning and automatic braking systems, demonstrating its excellent capabilities in preventing collisions. The Lexus RZ has not been tested.

To help make backing out of a parking space safer, the Ioniq 5 has standard Rear Cross-Traffic Collision Warning with Rear Cross-Traffic Collision-Avoidance Assist, systems which detect vehicles approaching from the sides and can automatically apply the brakes to prevent a collision. Only the RZ Premium/Luxury/F Sport offers Parking Support Brake.

Both the Ioniq 5 and the RZ have standard driver and passenger frontal airbags, front side-impact 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, driver alert monitors and available around view 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 Hyundai Ioniq 5 is safer than the Lexus RZ:

	Ioniq 5	RZ
	Into Pole
STARS	5 Stars	4 Stars
Max Damage Depth	7 inches	10 inches
HIC	252	305
Spine Acceleration	35 G’s	49 G’s
Hip Force	702 lbs.	974 lbs.

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

Instrumented handling tests conducted by the National Highway Traffic Safety Administration and analysis of its dimensions indicate that the Ioniq 5, with its five-star roll-over rating, is 2.2% less likely to roll over than the RZ, which received a four-star rating.

The Hyundai Ioniq 5 has achieved the Insurance Institute for Highway Safety’s (IIHS) highest rating of “Top Safety Pick Plus” for the 2026 model year. This distinction is based on its exceptional performance in IIHS’ rigorous battery of safety tests. Specifically, it earned a “Good” rating in the latest, more stringent moderate overlap front crash test, a “Good” result in the updated side impact test, a “Good” score in the revised pedestrian crash prevention test, and an “Acceptable” score in the revised vehicle-to-vehicle crash prevention test. The RZ has not yet been fully evaluated by the IIHS for 2026.

The Ioniq 5 comes with a full 5-year/60,000-mile basic warranty, which covers the entire truck and includes 24-hour roadside assistance. The RZ’s 4-year/50,000-mile basic warranty expires 1 year or 10,000 miles sooner.

Hyundai’s powertrain warranty covers the Ioniq 5 4 years and 30,000 miles longer than Lexus covers the RZ. Any repair needed on the engine, transmission, axles, joints or driveshafts is fully covered for 10 years or 100,000 miles. Coverage on the RZ ends after only 6 years or 70,000 miles.

The Ioniq 5’s corrosion warranty is 1 year longer than the RZ’s (7 vs. 6 years).

There are almost 4 times as many Hyundai dealers as there are Lexus dealers, which makes it much easier should you ever need service under the Ioniq 5’s warranty.

The Ioniq 5 has more powerful engines than the RZ:

	Torque
Ioniq 5 Standard Range electric motor	258 lbs.-ft.
Ioniq 5 Long Range electric motor	258 lbs.-ft.
Ioniq 5 electric motors	446 lbs.-ft.
RZ 350e electric motor	198 lbs.-ft.
RZ 450e electric motors	321 lbs.-ft.
RZ 550e F Sport electric motors	396 lbs.-ft.

As tested in Motor Trend the Hyundai Ioniq 5 electric motors is faster than the RZ 450e electric motors:

	Ioniq 5	RZ
Zero to 60 MPH	4.4 sec	4.7 sec
Quarter Mile	13.2 sec	13.5 sec
Speed in 1/4 Mile	102.7 MPH	98.9 MPH

The Ioniq 5 can travel longer on a full charge than the RZ on a full charge:

			Miles
Ioniq 5
	RWD	Long Range Electric Motor	318 miles
	AWD	19" Wheels Electric Motors	290 miles
		20" Wheels Electric Motors	269 miles
		XRT Electric Motors	259 miles
RZ
	FWD	w/18" Wheels Electric Motor	301 miles
		w/20" Wheels Electric Motor	284 miles
	AWD	450e w/18" Wheels Electric Motors	264 miles
		450e w/20" Wheels Electric Motors	257 miles

The Ioniq 5 stops shorter than the RZ:

	Ioniq 5	RZ
70 to 0 MPH	170 feet	171 feet	Car and Driver
60 to 0 MPH	131 feet	138 feet	Consumer Reports
60 to 0 MPH (Wet)	144 feet	158 feet	Consumer Reports

For better traction, the Ioniq 5 Limited AWD’s tires are larger than the largest tires available on the RZ (255/45R20 vs. 235/60R18).

The Ioniq 5 Limited AWD’s tires provide better handling because they have a lower 45 series profile (height to width ratio) that provides a stiffer sidewall than the RZ’s optional 50 series front tires.

The Ioniq 5 has a standard easy tire fill system. When inflating the tires, the vehicle’s integrated tire pressure sensors keep track of the pressure as the tires fill and tell the driver when the tires are inflated to the proper pressure. The RZ doesn’t offer vehicle monitored tire inflation.

For a smoother ride and more stable handling, the Ioniq 5’s wheelbase is 5.9 inches longer than on the RZ (118.1 inches vs. 112.2 inches).

The Ioniq 5’s front to rear weight distribution is more even (51% to 49%) than the RZ’s (53.9% to 46.1%). This gives the Ioniq 5 more stable handling and braking.

The Ioniq 5 Limited AWD handles at .85 G’s, while the RZ 450e Premium pulls only .83 G’s of cornering force in a Car and Driver skidpad test.

The Ioniq 5 AWD executes Motor Trend’s “Figure Eight” maneuver quicker than the RZ 550e F Sport (25.6 seconds vs. 26.5 seconds).

The Ioniq 5 is 5.9 inches shorter than the RZ, making the Ioniq 5 easier to handle, maneuver and park in tight spaces.

The design of the Hyundai Ioniq 5 amounts to more than styling. The Ioniq 5 has an aerodynamic coefficient of drag of .282 Cd. That is lower than the RZ (.28 to .29) and many sports cars. A more efficient exterior helps keep the interior quieter and helps the Ioniq 5 get better fuel mileage.

The Ioniq 5 has 1.2 inches more front headroom, .8 inches more front shoulder room, 1.9 inches more rear legroom, 1.8 inches more rear hip room and 3.4 inches more rear shoulder room than the RZ.

The front step up height for the Ioniq 5 is 1.4 inches lower than the RZ (16.6” vs. 18”). The Ioniq 5’s rear step up height is 1.1 inches lower than the RZ’s (17” vs. 18.1”).

The Ioniq 5 has a larger cargo volume with its rear seat folded than the RZ with its rear seat folded (58.5 vs. 55.6 cubic feet).

The Ioniq 5 XRT offers up to a 2700 lbs. towing capacity. The RZ has no towing capacity.

The Ioniq 5 uses gas struts to support the hood for easier service access. The RZ uses a prop rod to support its heavy hood. It takes two hands to open the hood and set the prop rod, the prop rod gets in the way during maintenance and service, and the prop rod could be knocked out, causing the heavy hood to fall on the person maintaining or servicing the car.

The power windows standard on both the Ioniq 5 and the RZ have locks to prevent small children from operating them. When the lock on the Ioniq 5 is engaged the driver can still operate all of the windows, for instance to close one opened by a child. The RZ prevents the driver from operating the other windows just as it does the other passengers.

To improve rear visibility by keeping the rear window clear, the Ioniq 5 has a standard rear wiper. The RZ doesn’t offer a rear wiper.

The Insurance Institute for Highway Safety (IIHS) conducts detailed tests on headlights for their range both straight ahead and in curves and to be certain they don’t exceed acceptable amounts of glare to oncoming drivers. The Ioniq 5’s headlights were rated “Good” to “Acceptable” by the IIHS, while the RZ’s headlights are rated “Acceptable.”

Manual rear side window sunshades are available in the Ioniq 5 to help block heat and glare for the rear passengers. The RZ doesn’t offer rear side window sunshades.

The Hyundai Ioniq 5 outsold the Lexus RZ by over seven to one during 2025.