Compare the2023 Kia K5 VS 2022 Hyundai Sonata

Both the K5 and Sonata have child safety locks to prevent children from opening the rear doors. The K5 EX/GT offers optional 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 Sonata’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.

The K5 1.6T offers all-wheel drive to maximize traction under poor conditions, especially in ice and snow. The Sonata doesn’t offer all-wheel drive.

The K5 has a standard blind spot warning system which uses sensors to alert the driver to objects in the vehicle’s blind spots where the side view mirrors don’t reveal them and moves the vehicle back into its lane. Only the Sonata SEL/SEL Plus/Limited/N Line offers a blind spot warning system.

To help make backing out of a parking space safer, the K5 has a standard rear cross-path warning system, which uses sensors in the rear bumper to alert the driver to vehicles approaching from the side, helping the driver avoid collisions. Only the Sonata SEL/SEL Plus/Limited/N Line has a rear cross-path warning system.

Both the K5 and the Sonata have standard driver and passenger frontal airbags, front and rear side-impact airbags, driver knee airbags, side-impact head airbags, front seatbelt pretensioners, front wheel drive, height adjustable front shoulder belts, plastic fuel tanks, four-wheel antilock brakes, traction control, electronic stability systems to prevent skidding, crash mitigating brakes, daytime running lights, lane departure warning systems, rearview cameras, driver alert monitors and available around view monitors.

The National Highway Traffic Safety Administration does 35 MPH front crash tests on new vehicles. In this test, results indicate that the Kia K5 is safer than the Hyundai Sonata:

	K5	Sonata
	Driver
STARS	5 Stars	4 Stars
HIC	295	514
Neck Injury Risk	21%	22%
Neck Compression	21 lbs.	33 lbs.

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

The National Highway Traffic Safety Administration does side impact tests on new vehicles. In this test, which crashes the vehicle into a flat barrier at 38.5 MPH and into a post at 20 MPH, results indicate that the Kia K5 is safer than the Hyundai Sonata:

	K5	Sonata
	Front Seat
STARS	5 Stars	5 Stars
HIC	110	163
Chest Movement	1 inches	1 inches
Abdominal Force	190 lbs.	305 lbs.
Hip Force	264 lbs.	498 lbs.
	Rear Seat
STARS	5 Stars	5 Stars
HIC	202	301
	Into Pole
STARS	5 Stars	5 Stars
Max Damage Depth	14 inches	20 inches
Spine Acceleration	32 G’s	38 G’s

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

For its top level performance in IIHS driver and passenger-side small overlap frontal, moderate overlap frontal, side impact, roof strength and head restraint tests, its standard vehicle-to-vehicle front crash prevention system, its standard vehicle-to-pedestrian front crash prevention system, and its standard headlight’s “Good” rating, the Insurance Institute for Highway Safety grants the K5 its highest rating: “Top Safety Pick Plus” for 2022, a rating granted to only 81 vehicles tested by the IIHS. The Sonata is only a standard “Top Safety Pick” for 2022.

J.D. Power and Associates rated the K5 second among midsize cars in their 2022 Initial Quality Study. The Sonata isn’t in the top three.

J.D. Power and Associates’ 2022 Initial Quality Study of new car owners surveyed provide the statistics that show that Kia vehicles are better in initial quality than Hyundai vehicles. J.D. Power ranks Kia fourth in initial quality, above the industry average. With 29 more problems per 100 vehicles, Hyundai is ranked 17th, below the industry average.

J.D. Power and Associates’ 2022 survey of the owners of three-year-old vehicles provides the statistics that show that Kia vehicles are more reliable than Hyundai vehicles. J.D. Power ranks Kia first in reliability, above the industry average. With 3 more problems per 100 vehicles, Hyundai is ranked third.

As tested in Motor Trend the K5 1.6T 1.6 turbo 4-cylinder is faster than the Sonata SEL Plus/Limited 1.6 turbo 4-cylinder:

	K5	Sonata
Zero to 30 MPH	2.6 sec	2.8 sec
Zero to 60 MPH	7.4 sec	7.8 sec
Zero to 80 MPH	12.6 sec	13.2 sec
Passing 45 to 65 MPH	3.8 sec	4 sec
Quarter Mile	15.7 sec	16 sec
Speed in 1/4 Mile	88.8 MPH	87.5 MPH

On the EPA test cycle the K5 gets better mileage than the Sonata:

			MPG
K5
	FWD	1.6 turbo 4-cyl.	27 city/37 hwy
	AWD	1.6 turbo 4-cyl.	25 city/33 hwy
Sonata
	FWD	2.5 turbo 4-cyl.	23 city/33 hwy

The K5 has a gallon more fuel capacity than the Sonata SE’s standard fuel tank (15.8 vs. 14.8 gallons), for longer range between fill-ups.

The K5 stops much shorter than the Sonata:

	K5	Sonata
60 to 0 MPH	116 feet	126 feet	Motor Trend

The K5 GT-Line AWD handles at .86 G’s, while the Sonata SEL Plus pulls only .85 G’s of cornering force in a Motor Trend skidpad test.

The K5 GT executes Motor Trend’s “Figure Eight” maneuver quicker than the Sonata SEL Plus (26.3 seconds @ .69 average G’s vs. 27 seconds @ .64 average G’s).

As tested by Car and Driver while cruising at 70 MPH, the interior of the K5 EX is quieter than the Sonata Limited (67 vs. 69 dB).

The K5 has .2 inches more front headroom, 2 inches more front hip room, .1 inches more front shoulder room, .4 inches more rear legroom and 2.2 inches more rear hip room than the Sonata.

The K5 EX/GT’s optional 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 Sonata SEL/SEL Plus/Limited/N Line’s rear power window switches have to be held the entire time to open or close them fully.

Consumer Reports rated the K5’s headlight performance “Good,” a higher rating than the Sonata’s headlights, which were rated “Fair.”

The K5’s standard outside mirrors include heating elements to clear off the mirrors for better visibility. Hyundai only offers heated mirrors on the Sonata SEL/SEL Plus/Limited/N Line.

The K5 has a standard dual zone air conditioning allows the driver and front passenger to choose two completely different temperatures so people with different temperature preferences won’t have to compromise. This makes both the driver and front passenger as comfortable as possible. Dual zone air conditioning is only available on the Sonata SEL/SEL Plus/Limited/N Line.

Consumer Reports® recommends both the Kia K5 and the Hyundai Sonata, based on reliability, safety and performance.

Motor Trend performed a comparison test in its May 2021 issue and they ranked the Kia K5 GT-Line AWD two places higher than the Hyundai Sonata SEL Plus.

J.D. Power and Associates rated the K5 first among midsize cars in owner reported satisfaction. This includes how well the vehicle performs and satisfies its owner’s expectations. The Sonata was rated second.