Compare the2025 Cadillac CT4VS 2025 BMW 4 Series Gran Coupe

Both the CT4 and 4 Series Gran Coupe have child safety locks to prevent children from opening the rear doors. The CT4 has power child safety locks, allowing the driver to activate and deactivate them from the driver's seat and to know when they're engaged. The 4 Series Gran Coupe’s child locks have to be individually engaged at each rear door with a manual switch. The driver can’t know the status of the locks without opening the doors and checking them.

Both the CT4 and the 4 Series Gran Coupe 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, available all wheel drive and around view monitors.

Cadillac’s powertrain warranty covers the CT4 2 years and 20,000 miles longer than BMW covers the 4 Series Gran Coupe. Any repair needed on the engine, transmission, axles, joints or driveshafts is fully covered for 6 years or 70,000 miles. Coverage on the 4 Series Gran Coupe ends after only 4 years or 50,000 miles.

There are over 62 percent more Cadillac dealers than there are BMW dealers, which makes it much easier should you ever need service under the CT4’s warranty.

J.D. Power and Associates rated the CT4 second among compact premium cars in their 2024 Initial Quality Study. The 4 Series Gran Coupe isn’t in the top three.

The CT4’s optional 2.7 turbo 4-cylinder produces 55 more horsepower (310 vs. 255) and 55 lbs.-ft. more torque (350 vs. 295) than the 430i Gran Coupe’s standard 2.0 turbo 4-cylinder hybrid.

An engine control system that can shut down some of the engine’s cylinders helps improve the CT4’s fuel efficiency. The 4 Series Gran Coupe doesn’t offer a system that can shut down part of the engine.

The CT4 has 1.9 gallons more fuel capacity than the 4 Series Gran Coupe (17.5 vs. 15.6 gallons), for longer range between fill-ups.

The CT4 has a standard cap-less fueling system. The fuel filler is automatically opened when the fuel nozzle is inserted and automatically closed when it’s removed. This eliminates the need to unscrew and replace the cap and it reduces fuel evaporation, which causes pollution. The 4 Series Gran Coupe doesn’t offer a cap-less fueling system.

A 10-speed automatic is standard on the Cadillac CT4 2.7 turbo 4-cylinder, for better acceleration and lower engine speed on the highway. Only an eight-speed automatic is available for the 4 Series Gran Coupe.

The CT4 has a standard easy tire fill system. When inflating the tires, the vehicle’s integrated tire pressure sensors keep track of the pressure as the tires fill and tell the driver when the tires are inflated to the proper pressure. The 4 Series Gran Coupe doesn’t offer vehicle monitored tire inflation.

For better maneuverability, the CT4’s turning circle is 2.3 feet tighter than the 4 Series Gran Coupe’s (37.1 feet vs. 39.4 feet). The CT4 AWD’s turning circle is 1.4 feet tighter than the 4 Series Gran Coupe’s (38 feet vs. 39.4 feet).

The Cadillac CT4 may be more efficient, handle and accelerate better because it weighs about 500 to 550 pounds less than the BMW 4 Series Gran Coupe.

The front grille of the CT4 Premium Luxury uses electronically controlled shutters to close off airflow and reduce drag when less engine cooling is needed. This helps improve highway fuel economy. The 4 Series Gran Coupe doesn’t offer active grille shutters.

J.D. Power and Associates surveys of service recipients show that Cadillac service is better than BMW. J.D. Power ranks Cadillac fifth in service department satisfaction. With a 21% lower rating, BMW is ranked 13th.

The CT4 Premium Luxury/Sport’s standard easy entry system glides the driver’s seat back when the door is unlocked or the ignition is switched off, making it easier for the driver to get in and out. The 4 Series Gran Coupe doesn’t offer an easy entry system.

To shield the driver and front passenger’s vision over a larger portion of the windshield and side windows, the CT4 has standard extendable sun visors. The 4 Series Gran Coupe doesn’t offer extendable visors.

The CT4 Sport offers optional massaging front seats in order to maximize comfort and eliminate fatigue on long trips. Massaging seats aren’t available in the 4 Series Gran Coupe.

Insurance will cost less for the CT4 owner. The Complete Car Cost Guide estimates that insurance for the CT4 will cost $1880 to $5055 less than the 4 Series Gran Coupe over a five-year period.

Consumer Reports® recommends the Cadillac CT4, based on reliability, safety and performance.