The 2 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.
When descending a steep, off-road slope, the 2 Series Gran Coupe’s standard Hill Descent Control allows you to creep down safely. The CT4 doesn’t offer Hill Descent Control.
Both the 2 Series Gran Coupe and CT4 offer rear cross-traffic warning, but the 2 Series Gran Coupe with Cross Traffic Warning also has Brake Intervention (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 2 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 2 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, available all wheel drive and around view monitors.