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Compare the2025 Mercedes CLAVS 2025 Hyundai Sonata

2025 Mercedes CLA
2025 Hyundai Sonata

Safety

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The CLA’s optional pre-crash front seatbelts will tighten automatically in the event the vehicle detects an impending crash, improving protection against injury significantly. The Sonata doesn’t offer pre-crash pretensioners.

The Mercedes CLA has standard driver and front passenger side knee airbags mounted low on the dashboard. These airbags helps 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 Sonata doesn’t offer a front passenger side knee airbag.

The CLA’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 Sonata doesn’t offer a whiplash protection system.

The CLA offers an optional Surround View System to allow the driver to see objects all around the vehicle on a screen. The Sonata only offers a rear monitor.

Both the CLA and the Sonata have standard driver and passenger frontal airbags, front side-impact airbags, driver knee airbags, side-impact head airbags, front and rear seatbelt pretensioners, front wheel drive, four-wheel antilock brakes, traction control, electronic stability systems to prevent skidding, crash mitigating brakes, daytime running lights, blind spot warning systems, rearview cameras, rear cross-path warning, driver alert monitors, available all wheel drive and lane departure warning systems.

Engine

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The CLA’s 2.0 turbo 4-cylinder hybrid produces 30 more horsepower (221 vs. 191) and 77 lbs.-ft. more torque (258 vs. 181) than the Sonata’s standard 2.5 DOHC 4-cylinder.

As tested in Consumer Reports the Mercedes CLA is faster than the Hyundai Sonata 4 cyl.:

CLA

Sonata

Zero to 30 MPH

2.7 sec

2.9 sec

Zero to 60 MPH

6.6 sec

7.5 sec

45 to 65 MPH Passing

4.3 sec

5.2 sec

Quarter Mile

15.1 sec

15.8 sec

Speed in 1/4 Mile

96 MPH

93 MPH

Fuel Economy and Range

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

MPG

CLA

FWD

2.0 turbo 4-cyl.

26 city/36 hwy

Sonata

FWD

SEL 2.5 DOHC 4-cyl.

25 city/36 hwy

2.5 turbo 4-cyl.

23 city/32 hwy

Regenerative brakes improve the CLA’s fuel efficiency by converting inertia back into energy instead of wasting it. The Sonata doesn’t offer a regenerative braking system.

Environmental Friendliness

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In its Green Vehicle Guide, the U.S. Environmental Protection Agency (EPA) rates the Mercedes CLA higher (6 out of 10) than the Hyundai Sonata (4 to 6). This means the CLA produces up to 12.1 pounds less smog-producing pollutants than the Sonata every 15,000 miles.

Brakes and Stopping

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

CLA

Sonata

Front Rotors

13 inches

12 inches

Rear Rotors

12.6 inches

11.2 inches

Tires and Wheels

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For better traction, the CLA has larger tires than the Sonata (225/45R18 vs. 205/65R16).

The CLA’s standard tires provide better handling because they have a lower 45 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 CLA has standard 18-inch wheels. Smaller 16-inch wheels are standard on the Sonata SE.

Changing a flat tire near traffic can be dangerous and inconvenient. The run-flat tires available on the CLA can be driven up to 50 miles without any air pressure, allowing you to drive to a service station for a repair. The Sonata doesn’t offer run-flat tires.

Suspension and Handling

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The CLA 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 Sonata’s suspension doesn’t offer adjustable shock absorbers.

The CLA’s drift compensation steering can automatically compensate for road conditions which would cause the vehicle to drift from side to side, helping the driver to keep the vehicle straight more easily. The Sonata doesn’t offer drift compensation steering.

Chassis

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The CLA is 8.7 inches shorter than the Sonata, making the CLA easier to handle, maneuver and park in tight spaces.

Cargo Capacity

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A standard locking glovebox keeps your small valuables safer in the CLA. The Sonata doesn’t offer locking storage for small valuables.

Ergonomics

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The CLA has a standard remote vehicle starting system, so the vehicle can be started from inside the driver's house. This allows the driver to comfortably warm up the engine before going out to the vehicle. The climate system will also automatically heat or cool the interior. The Sonata doesn’t offer a remote starting system.

When three different drivers share the CLA, the memory seats and mirrors make it convenient for all three. Each setting activates different, customized memories for the driver and front passenger’s seat positions and outside mirror angle. The Sonata doesn’t offer a memory system.

The CLA’s standard easy entry and exit feature glides the driver’s seat back, making it easier for the driver to get in and out. The Sonata doesn’t offer an easy entry system.

The CLA offers an optional heads-up display that projects speed and navigation instruction readouts in front of the driver’s line of sight, allowing drivers to view information without diverting their eyes from the road. The Sonata doesn’t offer a heads-up display.

The CLA’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 Sonata’s standard passenger windows don’t open or close automatically. With the Sonata SEL/N Line’s power windows, only the front windows open or close automatically.

If the windows are left open on the CLA the driver can close them all at the outside door handle or from a distance using the remote. On a hot day the driver can lower the windows from a distance using the keyless remote. The driver of the Sonata can only close the windows from inside the vehicle, with the ignition on.

The CLA’s standard Keyless-Go allow you to unlock the doors from any outside door handle, open the trunk, and start the engine, all without removing the key from the pocket or purse. Proximity Key standard on the Sonata doesn’t offer a sensor on the rear doors, so you’ll have to reach a front handle to unlock the rear door.

The CLA’s rain-sensitive wipers adjust their speed and turn on and off automatically based on the amount of rainfall on the windshield. This allows the driver to concentrate on driving without constantly adjusting the wipers. The Sonata’s intermittent wipers change speed with vehicle speed, but can’t turn on and off or change speed based on changing rainfall.

Heated windshield washer nozzles are optional on the CLA to prevent washer fluid and nozzles from freezing and help continue to keep the windshield clear in sub-freezing temperatures. The Sonata doesn’t offer heated windshield washer nozzles.

To help drivers avoid possible obstacles, the CLA offers optional cornering lights to illuminate around corners when the turn signals are activated. The Sonata doesn’t offer cornering lights. The CLA also offers optional adaptive headlights to illuminate around corners automatically by reading vehicle speed and steering wheel angle.

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

When the CLA is put in reverse, the passenger rearview mirror tilts from its original position. This gives the driver a better view of the curb during parallel parking maneuvers. Shifting out of reverse puts the mirror into its original position. The Sonata’s mirror doesn’t automatically adjust for backing.

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

Both the Mercedes CLA and Hyundai Sonata offer exterior mirrors that can be folded to provide convenience. The CLA features standard power folding mirrors, which allow for easy, one-touch folding or unfolding at the driver’s discretion. This provides added convenience when maneuvering or parking, as well as when walking past the parked vehicle. In comparison, the Sonata’s foldable mirrors are manual, requiring the driver to get out and physically fold them once parked and unfold them before getting in.

On extremely cold winter days, the CLA’s optional heated steering wheel provides comfort, allowing the driver to steer safely and comfortably before the car heater warms up. The Sonata doesn’t offer a heated steering wheel.

The CLA 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/N Line.

Both the CLA and the Sonata offer rear vents. For greater rear passenger comfort, the CLA has standard rear air conditioning vents to keep rear occupants cool in summer or warm in winter. The Sonata doesn’t offer rear air conditioning vents, only heat vents.

To quickly and conveniently keep personal devices charged without cables tangling and wearing out, the Mercedes CLA has a standard wireless phone charging system (Qi) in the center console. Wireless charging costs extra on the Sonata and isn’t available on the Sonata SE.

The CLA’s Active Parking Assist can parallel park or back into a parking spot by itself, starting, stopping and changing direction automatically. The Sonata doesn’t offer an automated parking system.

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