Compare the2023 BMW 4 Series Gran CoupeVS 2023 Cadillac CT4

The 4 Series Gran Coupe’s 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.

The 4 Series Gran Coupe has a standard PostCrash iBrake, which automatically applies the brakes in the event of a crash to help prevent secondary collisions and prevent further injuries. The CT4 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 4 Series Gran Coupe’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 4 Series Gran Coupe and the CT4 have standard driver and passenger frontal airbags, front side-impact airbags, driver and front passenger knee airbags, side-impact head airbags, front seatbelt pretensioners, 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, blind spot warning systems, rearview cameras, rear cross-path warning and available all wheel drive.

The 4 Series Gran Coupe’s corrosion warranty is 6 years longer than the CT4’s (12 vs. 6 years).

BMW pays for scheduled maintenance on the 4 Series Gran Coupe for 3 years and 36,000 miles. BMW will pay for oil changes, lubrication and any other required maintenance. Cadillac only pays for the first scheduled maintenance visit on the CT4.

J.D. Power and Associates rated the 4 Series Gran Coupe third among compact premium cars in their 2022 Initial Quality Study. The CT4 isn’t in the top three in its category.

From surveys of all its subscribers, Consumer Reports’ January 2021 Auto Issue reports that BMW vehicles are more reliable than Cadillac vehicles. Consumer Reports ranks BMW 9 places higher in reliability than Cadillac.

The 430i Gran Coupe’s standard 2.0 turbo 4-cylinder produces 18 more horsepower (255 vs. 237) and 36 lbs.-ft. more torque (294 vs. 258) than the CT4’s standard 2.0 turbo 4-cylinder. The M440i Gran Coupe’s standard 3.0 turbo 6-cylinder hybrid produces 72 more horsepower (382 vs. 310) and 18 lbs.-ft. more torque (368 vs. 350) than the CT4’s optional 2.7 turbo 4-cylinder.

On the EPA test cycle the 4 Series Gran Coupe gets better mileage than the CT4:

Regenerative brakes improve the 4 Series Gran Coupe’s fuel efficiency by converting inertia back into energy instead of wasting it. The CT4 doesn’t offer a regenerative braking system.

The 4 Series Gran Coupe’s launch control uses engine electronics to hold engine RPM’s precisely in order to provide the most stable and rapid acceleration possible, using all of the available traction. The CT4 doesn’t offer launch control.

For better stopping power the 4 Series Gran Coupe’s brake rotors are larger than those on the CT4:

For better traction, the 4 Series Gran Coupe has larger standard tires than the CT4 (245/45R18 vs. 225/45R17). The 4 Series Gran Coupe’s optional tires are larger than the largest tires available on the CT4 (F:245/40R19 & R:255/40R19 vs. 235/40R18).

For better ride, handling and brake cooling the 4 Series Gran Coupe has standard 18-inch wheels. Smaller 17-inch wheels are standard on the CT4 Luxury.

The 4 Series Gran Coupe 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.

For a smoother ride and more stable handling, the 4 Series Gran Coupe’s wheelbase is 3.1 inches longer than on the CT4 (112.4 inches vs. 109.3 inches).

For better handling and stability, the track (width between the wheels) on the 4 Series Gran Coupe is 2.1 inches wider in the front and 1.8 inches wider in the rear than on the CT4.

The 4 Series Gran Coupe’s front to rear weight distribution is more even (49.8% to 50.2%) than the CT4’s (54% to 46%). This gives the 4 Series Gran Coupe more stable handling and braking.

The 4 Series Gran Coupe has .3 inches more front headroom, .1 inches more rear headroom, 1.5 inches more rear legroom and .4 inches more rear shoulder room than the CT4.

To make loading and unloading groceries and cargo easier when your hands are full, the 4 Series Gran Coupe’s power liftgate can be opened or closed just by waving your foot, leaving your hands completely free. The CT4 doesn’t offer a power or hands-free opening trunk.

The 4 Series Gran Coupe 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.

The 4 Series Gran Coupe’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 4 Series Gran Coupe the driver can close them all at the outside door handle. On a hot day the driver can lower the windows at the outside door handle or 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 4 Series Gran Coupe has a standard locking fuel door with a remote release located convenient to the driver. A locking fuel door helps prevent fuel theft and vandalism, such as sugar in the tank. The CT4 doesn’t offer a locking fuel door.

The 4 Series Gran Coupe’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.

The CT4 Premium Luxury/Sport’s optional cornering lamps activate a lamp on the front corner when the turn signal is activated. The 4 Series Gran Coupe’s standard 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.

The 4 Series Gran Coupe M440i’s optional Parking Assistant Plus 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 BMW 4 Series comes in coupe, convertible and four door hatchback bodystyles; the Cadillac CT4 isn’t available as a coupe or convertible.

The 4 Series Gran Coupe will cost the buyer less in the long run because of its superior resale value. The IntelliChoice estimates that the 4 Series Gran Coupe will retain 46.46% to 47.21% of its original price after five years, while the CT4 only retains 39.41% to 41.44%.

The BMW 4 Series outsold the Cadillac CT4 by over two to one during the 2021 model year.