Compare the2025 Subaru LegacyVS 2023 Hyundai Sonata

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For enhanced safety, the front and rear seat shoulder belts of the Subaru Legacy have pretensioners to tighten the seatbelts and eliminate dangerous slack in the event of a collision and force limiters to limit the pressure the belts will exert on the passengers. The Hyundai Sonata doesn’t offer pretensioners for its rear seat belts.

The Legacy has standard Whiplash-Reducing Front Seats, which use a specially designed seat to protect the driver and front passenger from whiplash. During a rear-end collision, the Whiplash-Reducing Front Seats system allows the backrest to travel backwards to cushion the occupants and the headrests move forward to prevent neck and spine injuries. The Sonata doesn’t offer a whiplash protection system.

The Legacy has all-wheel drive to maximize traction under poor conditions, especially in ice and snow. The Sonata doesn’t offer all-wheel drive.

Both the Legacy and the Sonata have standard driver and passenger frontal airbags, front side-impact airbags, driver knee airbags, side-impact head airbags, 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, rearview cameras, available blind spot warning systems, rear parking sensors, rear cross-path warning and driver alert monitors.

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

	Legacy	Sonata
OVERALL STARS	5 Stars	4 Stars
	Driver
STARS	5 Stars	4 Stars
HIC	158	514
Leg Forces (l/r)	230/249 lbs.	321/341 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 Subaru Legacy is safer than the Hyundai Sonata:

	Legacy	Sonata
	Front Seat
STARS	5 Stars	5 Stars
HIC	50	163
Chest Movement	.7 inches	1 inches
Abdominal Force	216 lbs.	305 lbs.
Hip Force	335 lbs.	498 lbs.
	Rear Seat
STARS	5 Stars	5 Stars
HIC	220	301
Spine Acceleration	62 G’s	72 G’s
	Into Pole
STARS	5 Stars	5 Stars
Max Damage Depth	14 inches	20 inches
HIC	104	288
Spine Acceleration	38 G’s	38 G’s

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

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J.D. Power and Associates’ 2023 Initial Quality Study of new car owners surveyed provide the statistics that show that Subaru vehicles are better in initial quality than Hyundai vehicles. J.D. Power ranks Subaru above average in initial quality. With 3 more problems per 100 vehicles, Hyundai is rated lower.

From surveys of all its subscribers, Consumer Reports’ January 2024 Auto Issue reports that Subaru vehicles are more reliable than Hyundai vehicles. Consumer Reports ranks Subaru 5 places higher in reliability than Hyundai.

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As tested in Motor Trend the Legacy Sport/XT 2.4 turbo 4-cylinder is faster than the Sonata SEL Plus/Limited 1.6 turbo 4-cylinder:

	Legacy	Sonata
Zero to 60 MPH	6.1 sec	7.8 sec
Quarter Mile	14.8 sec	16 sec
Speed in 1/4 Mile	94.5 MPH	87.5 MPH

The flat cylinder configuration of the boxer engine in the Legacy lowers its center of gravity, enhancing handling stability (That’s why Porsche uses boxer engines.). The Sonata doesn’t offer a boxer engine configuration.

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On the EPA test cycle the Legacy 2.5i gets better fuel mileage than the Sonata N Line 2.5 turbo 4-cylinder (27 city/35 hwy vs. 23 city/33 hwy).

Regardless of its engine, the Legacy’s engine automatically turns off when the vehicle is stopped, saving fuel and reducing pollution. If the conditions warrant or the driver wishes, the system can be manually disabled at any time for the duration of a trip. Hyundai only offers an automatic engine start/stop system on the Sonata SE.

The Legacy has 3.7 gallons more fuel capacity than the Sonata SE’s standard fuel tank (18.5 vs. 14.8 gallons), for longer range between fill-ups. The Legacy has 2.6 gallons more fuel capacity than the Sonata SEL/SEL Plus/Limited/N Line’s standard fuel tank (18.5 vs. 15.9 gallons).

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The U.S. Environmental Protection Agency (EPA) certifies the Subaru Legacy as a “Super Ultra Low Emissions Vehicle” (SULEV). The Hyundai Sonata is only certified to “Ultra Low Emissions Vehicle” (ULEV) standards.

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The Legacy has a standard continuously variable transmission (CVT). With no “steps” between gears, it can keep the engine at the most efficient speed for fuel economy, or keep it at its peak horsepower indefinitely for maximum acceleration. The Sonata doesn’t offer a CVT.

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For better stopping power the Legacy’s standard brake rotors are larger than those on the Sonata:

	Legacy	Sonata
Front Rotors	12.4 inches	12 inches
Rear Rotors	11.8 inches	11.2 inches

The Legacy’s standard front and rear disc brakes are vented to help dissipate heat for shorter stops with less fading. The rear discs on the Sonata are solid, not vented.

The Legacy stops shorter than the Sonata:

	Legacy	Sonata
70 to 0 MPH	174 feet	175 feet	Car and Driver

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For better traction, the Legacy has larger tires than the Sonata (225/55R17 vs. 205/65R16).

The Legacy Base/Premium’s standard tires provide better handling because they have a lower 55 series profile (height to width ratio) that provides a stiffer sidewall than the Sonata SE’s standard 65 series tires.

For better ride, handling and brake cooling the Legacy Base/Premium has standard 17-inch wheels. Smaller 16-inch wheels are standard on the Sonata SE.

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The front grille of the Legacy 2.5i uses electronically controlled shutters to close off airflow and reduce drag when less engine cooling is needed. This helps improve highway fuel economy. The Sonata doesn’t offer active grille shutters.

As tested by Car and Driver while under full throttle, the interior of the Legacy Sport is quieter than the Sonata Limited (73 vs. 78 dB).

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The Legacy has .9 inches more front hip room, .2 inches more front shoulder room, 4.7 inches more rear legroom, .4 inches more rear hip room and 1.3 inches more rear shoulder room than the Sonata.

The front step up height for the Legacy is 1.5 inches lower than the Sonata (13.5” vs. 15”). The Legacy’s rear step up height is 1 inches lower than the Sonata’s (14” vs. 15”).

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To allow full utilization of available cargo room, the Legacy’s trunk lid uses concealed beam hinges that don’t intrude into the trunk. Its intrusive beam hinge reduces the Sonata’s useful trunk space.

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The engine in the Legacy is mounted longitudinally (North-South), instead of sideways, as in the Sonata. This makes it easier to service and maintain, because the accessory belts are in front.

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The Legacy’s standard 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 Sonata’s standard passenger windows don’t open or close automatically. The Legacy Limited/Sport/Touring’s front and rear power windows all open or close fully with one touch of the switches. With the Sonata SEL/SEL Plus/Limited/N Line’s power windows, only the front windows open or close automatically.

In case you lock your keys in your vehicle, or don’t have them with you, you can let yourself in using the Legacy’s available exterior PIN entry system (not available on Legacy Base). The Sonata doesn’t offer an exterior PIN entry system, and its Blue Link can’t unlock the doors if the vehicle doesn’t have cell phone reception or the driver can’t contact the service.

To help drivers see further while navigating curves, the Legacy has standard adaptive headlights to illuminate around corners automatically by reading vehicle speed and steering wheel angle. The Sonata doesn’t offer cornering lights.

The Legacy’s optional 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 Sonata offers an automatic rear view mirror, but its side mirrors don’t dim.

Both the Legacy and the Sonata offer available heated front seats. The Legacy Limited/Touring also has standard heated rear seats to keep those passengers extremely comfortable in the winter. Heated rear seats aren’t available in the Sonata.

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Insurance will cost less for the Legacy owner. The Complete Car Cost Guide estimates that insurance for the Legacy will cost $755 to $5360 less than the Sonata over a five-year period.

According to The Car Book by Jack Gillis, the Legacy is less expensive to operate than the Sonata because typical repairs cost much less on the Legacy than the Sonata, including $399 less for a muffler, $22 less for fuel injection, $93 less for a timing belt/chain and $329 less for a power steering pump.

IntelliChoice estimates that five-year ownership costs (depreciation, financing, insurance, fuel, fees, repairs and maintenance) for the Subaru Legacy will be $801 to $1439 less than for the Hyundai Sonata.

© 1999 - 2024Advanta-STAR Automotive Research, all rights reserved. This vehicle comparison and all of the content in it are provided only by license from Advanta-STAR Automotive Research Corporation of America (“Advanta-STAR”). If you are not a legally licensed user of this vehicle comparison, it is against federal law to access it, copy it, forward it, or use it in any manner whatsoever. Any unauthorized use of this vehicle comparison is a violation of U.S. and international law and is punishable criminally and civilly. Removal of this watermark/notification without prior written license and approval received from Advanta-STAR is an agreement, understanding, and/or stipulation by the person(s), entities, agents, attorneys, and any other persons involved in the removal of this watermark/notification (including but not limited to Search Optics, LLC and any and all parent entities, sister entities, and subsidiary entities of Search Optics, LLC and/or any other entity, agent, attorney, and persons related in any manner to Search Optics, LLC) to: 1) an agreed upon amount of liquidated monetary damages of a minimum of $1,250,000.00 US Dollars in favor of Advanta-STAR; 2) the jurisdiction and enforcement of any legal claims associated with this matter asserted by Advanta-STAR in the United States Federal District Court in Portand, Oregon; and 3) service of process of any legal claims asserted by Advanta-STAR associated with this matter may be accomplished by First-Class Postage by the United States Postal Service or comparable service. XPYNN-M34HG 2a06:98c0:3600::103 2024/12/03

Consumer Reports® recommends both the Subaru Legacy 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 Subaru Legacy Limited higher than the Hyundai Sonata SEL Plus.