Compare the2025 Mercedes CLAVS 2025 Cadillac CT4

For enhanced safety, the front and rear seat shoulder belts of the Mercedes CLA 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 Cadillac CT4 doesn’t offer pretensioners for its rear seat belts.

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 CT4 doesn’t offer pre-crash pretensioners.

Both the CLA and CT4 have rear cross-traffic warning, but the CLA has Active Brake Assist (automatically applies the brakes) to better prevent a collision when backing near traffic. The CT4’s Rear Cross Traffic Alert doesn’t automatically brake.

The CLA’s driver alert monitor detects an inattentive driver then sounds a warning and suggests a break. According to the NHTSA, drivers who fall asleep cause about 100,000 crashes and 1500 deaths a year. The CT4 doesn’t offer a driver alert monitor.

Both the CLA and the CT4 have standard driver and passenger frontal airbags, front side-impact airbags, driver and front passenger knee airbags, side-impact head airbags, 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, available all wheel drive, lane departure warning systems and around view monitors.

J.D. Power and Associates’ 2024 Initial Quality Study of new car owners surveyed provide the statistics that show that Mercedes vehicles are better in initial quality than Cadillac vehicles. With 8 fewer problems per 100 vehicles, JD Power ranks Mercedes higher than Cadillac.

As tested in Consumer Reports the Mercedes CLA is faster than the Cadillac CT4 2.0 turbo 4-cylinder:

On the EPA test cycle the CLA gets better mileage than the CT4:

Regenerative brakes improve the CLA’s fuel efficiency by converting inertia back into energy instead of wasting it. The CT4 doesn’t offer a regenerative braking system.

The CLA has a standard locking fuel door which locks and unlocks with the power locks. The fuel filler door is not lockable on the CT4. A locking fuel door helps prevent fuel theft and vandalism, such as sugar in the tank.

In its Green Vehicle Guide, the U.S. Environmental Protection Agency (EPA) rates the Mercedes CLA higher (6 out of 10) than the Cadillac CT4 (5 to 6). This means the CLA produces up to 6.9 pounds less smog-producing pollutants than the CT4 every 15,000 miles.

The CLA offers a standard sequential manual gearbox (SMG). With no clutch pedal to worry about and a fully automatic mode, an SMG is much more efficient than a conventional automatic but just as easy to drive. The CT4 doesn’t offer an SMG or a conventional manual transmission.

For better stopping power the CLA’s brake rotors are larger than those on the CT4:

For better ride, handling and brake cooling the CLA has standard 18-inch wheels. Smaller 17-inch wheels are standard on the CT4 Luxury.

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 CT4’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 CT4 doesn’t offer drift compensation steering.

For better handling and stability, the track (width between the wheels) on the CLA is 3.2 inches wider in the front and 1.4 inches wider in the rear than on the CT4.

The CLA 250 4MATIC handles at .87 G’s, while the CT4 Premium Luxury AWD pulls only .83 G’s of cornering force in a Motor Trend skidpad test.

For better maneuverability, the CLA’s turning circle is 1 foot tighter than the CT4’s (36.1 feet vs. 37.1 feet). The CLA’s turning circle is 1.9 feet tighter than the CT4 AWD’s (36.1 feet vs. 38 feet).

The CLA has .2 inches more front headroom, .5 inches more rear legroom and .1 inches more rear shoulder room than the CT4.

The CLA has a larger trunk than the CT4 (11.6 vs. 10.7 cubic feet).

To make loading groceries and cargo easier when your hands are full, the CLA’s trunk can be opened just by kicking your foot under the back bumper, leaving your hands completely free. The CT4 doesn’t offer a hands-free gesture to open its trunk, forcing you to put cargo down if your hands are full.

The CLA uses gas struts to support the hood for easier service access. The CT4 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.

Unlike the driver-only memory seat and mirrors in the CT4 Premium Luxury/Sport, the CLA has standard driver and passenger memory, so that when drivers switch, the memory setting adjusts the driver’s seat and outside mirror angle and the front passenger seat also adjusts to the new passenger’s preset preferences.

The CLA’s front and rear power windows all open or close with one touch of the switches, making it more convenient at drive-up windows and toll booths, or when talking with someone outside of the car. The CT4’s rear power window switches have to be held the entire time to close them fully.

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 CT4 can only close the windows from inside the vehicle, with the ignition on.

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 CT4’s standard manually variable intermittent wipers have to be constantly adjusted.

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 CT4 doesn’t offer heated windshield washer nozzles.

The CT4 Premium Luxury/Sport’s optional cornering lamps activate a lamp on the front corner when the turn signal is activated. The CLA’s optional adaptive cornering lights turn the actual headlight unit up to several degrees, depending on steering wheel angle and vehicle speed. This lights a significant distance into corners at any speed.

Both the Mercedes CLA and Cadillac CT4 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 CT4’s foldable mirrors are manual, requiring the driver to get out and physically fold them once parked and unfold them before getting in.

The Mercedes CLA has a standard Homelink wireless remote control system for garage door operation and device management, conveniently located on the rear view mirror. Homelink® eliminates the need for separate garage door openers and associated risks of losing, breaking, or having dead batteries. Homelink® is only available on the CT4 Premium Luxury/Sport.

The CLA’s Active Parking Assist can parallel park or back into a parking spot by itself, starting, stopping and changing direction automatically. The CT4 doesn’t offer an automated parking system.

The Mercedes CLA outsold the Cadillac CT4 by 7% during 2023.