Compare the2022 BMW 4 Series Gran CoupeVS 2021 Cadillac CT5

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 CT5 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 standard lane departure warning system alerts a temporarily inattentive driver when the vehicle begins to leave its lane. A lane departure warning system costs extra on the CT5 and is only available on CT5 Premium Luxury/Sport.

The 4 Series Gran Coupe has a standard blind spot warning system which uses sensors to alert the driver to objects in the vehicle’s blind spots where the side view mirrors don’t reveal them and moves the vehicle back into its lane. Only the CT5 Premium Luxury/Sport offers a blind spot warning system.

To help make backing out of a parking space safer, the 4 Series Gran Coupe has a standard cross-path warning system, which uses sensors in the rear bumper to alert the driver to vehicles approaching from the side, helping the driver avoid collisions. Only the CT5 Premium Luxury/Sport has a cross-path warning system.

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 CT5 doesn’t offer a driver alert monitor.

Both the 4 Series Gran Coupe and the CT5 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, rearview cameras and available all wheel drive.

The 4 Series Gran Coupe’s corrosion warranty is 6 years longer than the CT5’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 CT5.

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 CT5’s standard 2.0 turbo 4-cylinder. The M440i Gran Coupe’s standard 3.0 turbo 6-cylinder hybrid produces 47 more horsepower (382 vs. 335) than the CT5’s optional 3.0 turbo V6.

On the EPA test cycle the 4 Series Gran Coupe gets better mileage than the CT5:

Regenerative brakes improve the 4 Series Gran Coupe’s fuel efficiency by converting inertia back into energy instead of wasting it. The CT5 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 CT5 doesn’t offer launch control.

The 4 Series Gran Coupe’s standard front and rear disc brakes are vented to help dissipate heat for shorter stops with less fading. The rear discs standard on the CT5 are solid, not vented.

For better traction and acceleration, the 4 Series Gran Coupe has larger standard rear tires than the CT5 (255/35R19 vs. 245/45R18).

The 4 Series Gran Coupe is 5.3 inches shorter than the CT5, making the 4 Series Gran Coupe easier to handle, maneuver and park in tight spaces.

To make loading and unloading groceries and cargo easier, especially for short adults, the 4 Series Gran Coupe has a standard power liftgate, which opens and closes automatically by pressing a button or just by waving your foot, completely leaving your hands free. The CT5 doesn’t offer a power trunk, so its trunk has to be closed manually.

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 CT5 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. A locking fuel door is only offered on the CT5 Premium Luxury/Sport and it still costs extra.

The CT5 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 BMW 4 Series comes in coupe, convertible and four door hatchback bodystyles; the Cadillac CT5 isn’t available as a coupe or convertible.