The BMW 4 Series Coupé is a partner model to 3 Series and their structure is practically identical. Euro NCAP compared both vehicles to verify that the BMW 3 Series results can be applied to 4 Series Coupé and performed additional tests where necessary. The footage includes video of the BMW 3 Series 2019 and additional 4 Series Coupé 2021 tests.

Euro NCAP performs a series of crash and safety tests on car models:
- a frontal impact test, the car impacts a rigid barrier
- an offset frontal impact test, 40% of the width of the car is striking a deformable barrier
- a pole test, the tested car is propelled sideways into a rigid pole
- a side impact test, a mobile deformable barrier impacts the driver's door.
A series of pedestrian tests are conducted with different impactors, adult and child head form, lower and upper leg form and whiplash tests are performed on a sled.
Active safety is tested based on the car’s equipment: autonomous emergency braking systems (car to car, with a pedestrian and a cyclist target), lane support and speed assist technologies and seatbelt reminders.

All details on the Euro NCAP Website:
BMW 4 Series Coupé 2019 test information https://www.euroncap.com/en/results/b...
Euro NCAP May 2021 Press release https://www.euroncap.com/en/press-med...