Compare the2026 Acura IntegraVS 2025 Kia K4

Safety
Warranty
Reliability
Engine
Fuel Economy and Range
Transmission
Brakes and Stopping
Tires and Wheels
Suspension and Handling
Passenger Space
Cargo Capacity
Servicing Ease
Ergonomics
Recommendations

Safety

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The Acura Integra 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 K4 doesn’t offer knee airbags.

The Integra Automatic has standard Post-Collision Braking System, which automatically apply the brakes in the event of a crash to help prevent secondary collisions and prevent further injuries. The K4 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.

The Integra’s lane departure warning system alerts a temporarily inattentive driver when the vehicle begins to leave its lane and gently nudges the vehicle back towards its lane. The K4 doesn’t offer a lane departure warning system.

The Integra has a standard blind spot warning system that uses sensors to alert the driver to objects in the vehicle’s blind spots where the side view mirrors don’t reveal them. A system to reveal vehicles in the K4’s blind spot costs extra.

To help make backing out of a parking space safer, the Integra has standard Rear Cross Traffic Monitor, helping the driver avoid collisions. Only the K4 LXS/EX/GT-Line offers Rear Cross-Traffic Collision Warning.

The Integra A-Spec Technology/Type S offers optional AcuraLink, which uses a global positioning satellite (GPS) receiver and a cellular system to get turn-by-turn driving directions, remotely unlock your doors if you lock your keys in, help track down your vehicle if it’s stolen or send emergency personnel to the scene if any airbags deploy. The K4 doesn’t offer a GPS response system, only a navigation computer with no live response for emergencies, so if you’re involved in an accident and you’re incapacitated help may not come as quickly.

Both the Integra and the K4 have standard driver and passenger frontal airbags, front and rear side-impact airbags, side-impact head airbags, front and rear seatbelt pretensioners, front wheel drive, height adjustable front shoulder belts, four-wheel antilock brakes, traction control, electronic stability systems to prevent skidding, crash mitigating brakes, daytime running lights, rearview cameras, driver alert monitors and available rear parking sensors.

The National Highway Traffic Safety Administration does 35 MPH front crash tests on new vehicles. In this test, results indicate that the Acura Integra is safer than the Kia K4:

	Integra	K4
OVERALL STARS	5 Stars	4 Stars
	Driver
STARS	5 Stars	5 Stars
HIC	231	375
Neck Compression	19 lbs.	39 lbs.
	Passenger
STARS	5 Stars	4 Stars
HIC	328	349
Chest Compression	.6 inches	.7 inches
Neck Injury Risk	27%	30.2%

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 Acura Integra is safer than the Kia K4:

	Integra	K4
	Front Seat
STARS	5 Stars	5 Stars
HIC	145	222
Chest Movement	.9 inches	1 inches
Hip Force	301 lbs.	361 lbs.
	Rear Seat
STARS	5 Stars	5 Stars
HIC	239	320
Spine Acceleration	60 G’s	66 G’s
Hip Force	531 lbs.	678 lbs.
	Into Pole
STARS	5 Stars	5 Stars
Hip Force	646 lbs.	693 lbs.

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

Warranty

The Integra’s 5 year corrosion warranty has no mileage limitations, but the corrosion warranty on the K4 runs out after 100,000 miles.

Reliability

J.D. Power and Associates rated the Integra first among small premium cars in their 2025 Initial Quality Study. The K4 was rated second in its category.

From surveys of all its subscribers, Consumer Reports’ March 2025 Auto Issue reports that Acura vehicles are more reliable than Kia vehicles. Consumer Reports ranks Acura 4 places higher in reliability than Kia.

Engine

The Integra’s standard 1.5 turbo 4-cylinder produces 53 more horsepower (200 vs. 147) and 60 lbs.-ft. more torque (192 vs. 132) than the K4’s standard 2.0 DOHC 4-cylinder. The Integra’s 1.5 turbo 4-cylinder produces 10 more horsepower (200 vs. 190) than the K4 GT-Line Turbo’s standard 1.6 turbo 4-cylinder. The Integra Type S’ standard 2.0 turbo 4-cylinder produces 130 more horsepower (320 vs. 190) and 115 lbs.-ft. more torque (310 vs. 195) than the K4 GT-Line Turbo’s standard 1.6 turbo 4-cylinder.

As tested in Motor Trend the Acura Integra 1.5 turbo 4-cylinder is faster than the Kia K4 4 cyl. (automatics tested):

	Integra	K4
Zero to 60 MPH	7.6 sec	9.1 sec
Quarter Mile	15.9 sec	17 sec
Speed in 1/4 Mile	92.9 MPH	85.3 MPH

Fuel Economy and Range

On the EPA test cycle the Integra 1.5 turbo 4-cylinder CVT gets better fuel mileage than the K4 GT-Line Turbo 1.6 turbo 4-cylinder 8-speed Auto (29 city/37 hwy vs. 26 city/36 hwy).

The Integra has a standard cap-less fueling system. The fuel filler is automatically opened when the fuel nozzle is inserted and automatically closed when it’s removed. This eliminates the need to unscrew and replace the cap and it reduces fuel evaporation, which causes pollution. The K4 doesn’t offer a cap-less fueling system.

Transmission

The Integra offers a manual transmission for better acceleration, control and sportiness. The K4 doesn’t offer a manual transmission.

Brakes and Stopping

For better stopping power the Integra’s brake rotors are larger than those on the K4:

	Integra	Integra Type S	K4	K4 GT-Line Turbo
Front Rotors	12.3 inches	13.8 inches	11 inches	12 inches
Rear Rotors	11.1 inches	12 inches	10 inches	11.2 inches

The Integra stops much shorter than the K4:

	Integra	K4
70 to 0 MPH	145 feet	173 feet	Car and Driver
60 to 0 MPH	100 feet	121 feet	Motor Trend

Tires and Wheels

For better traction, the Integra has larger standard tires than the K4 (215/50R17 vs. 205/55R16). The Integra Type S’ tires are larger than the largest tires available on the K4 (265/30R19 vs. 235/40R18).

The Integra’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 K4 LX/LXS’ standard 55 series tires. The Integra Type S’ tires have a lower 30 series profile than the K4 GT-Line’s 40 series tires.

For better ride, handling and brake cooling the Integra has standard 17-inch wheels. Smaller 16-inch wheels are standard on the K4 LX/LXS. The Integra Type S’ 19-inch wheels are larger than the 18-inch wheels on the K4 GT-Line.

The Integra 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 K4 doesn’t offer vehicle monitored tire inflation.

Suspension and Handling

For superior ride and handling, the Acura Integra has fully independent front and rear suspensions. An independent suspension allows the wheels to follow the road at the best angle for gripping the pavement, without compromising ride comfort. The K4 has a rear torsion beam axle, with a semi-independent rear suspension.

The Integra has standard front and rear stabilizer bars, which help keep the Integra flat and controlled during cornering. The K4 base model’s suspension doesn’t offer a rear stabilizer bar.

The Integra offers an optional 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. The K4’s suspension doesn’t offer adjustable shock absorbers.

The Integra Type S handles at 1.02 G’s, while the K4 GT-Line pulls only .81 G’s of cornering force in a Motor Trend skidpad test.

The Integra Type S executes Motor Trend’s “Figure Eight” maneuver 3.5 seconds quicker than the K4 GT-Line (24.5 seconds @ .76 average G’s vs. 28 seconds @ .6 average G’s).

Passenger Space

Because it has more passenger and cargo room, the EPA rates the Integra a Large car, while the K4 is rated a Mid-size.

The Integra has 1 inch more front hip room, .5 inches more front shoulder room and 1.3 inches more rear shoulder room than the K4.

Cargo Capacity

The Integra’s standard folding rear seats are split to accommodate bulky cargo. The K4’s standard single piece folding rear seat is not as flexible; long cargo and a passenger can’t share the rear seat.

Servicing Ease

J.D. Power and Associates surveys of service recipients show that Acura service is better than Kia. J.D. Power ranks Acura 6th in service department satisfaction (above the industry average). With a 45% lower rating, Kia is ranked 27th.

Ergonomics

The Integra’s standard easy entry system glides the driver’s seat back, making it easier for the driver to get in and out. An easy entry system costs extra on the K4, and is not available on all models.

The Integra A-Spec Technology/Type S has a standard heads-up display that projects speed and warning readouts in front of the driver’s line of sight, allowing drivers to view information without diverting their eyes from the road. The K4 doesn’t offer a heads-up display.

The Integra’s front power windows 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 K4’s standard passenger windows don’t open or close automatically. The K4 EX/GT-Line’s rear windows don’t close automatically.

The Integra’s standard speed-sensitive wipers speed up when the vehicle does, so that the driver doesn’t have to continually adjust the speed of the wipers. The K4’s manually variable intermittent wipers have to be constantly adjusted. The Integra A-Spec Technology/Type S’ standard wipers adjust their speed and turn on and off automatically according to the amount of rainfall on the windshield.

To quickly and conveniently keep personal devices charged without cables tangling and wearing out, the Acura Integra has a standard wireless phone charging system (Qi) in the center console. Only the K4 EX/GT-Line offers wireless charging.

Recommendations

Consumer Reports® recommends the Acura Integra, based on reliability, safety and performance.

The Type S was chosen as a Car and Driver’s “Top Ten” for 2024. The K4 has never been chosen by Car and Driver in their “10Best” issue.

A group of representative automotive journalists from North America selected the Integra as the 2023 North American Car of the Year. The K4 has never been chosen.

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