Comfort and Convenience
The engine start button matters at the point of entry: with the keyless entry system detecting the fob nearby, the car is started by pressing the button rather than turning a key, so the fob can stay in a pocket.
Safety and Driver Assistance
ABS is relevant when braking hard on a wet or loose surface, where a wheel would otherwise lock. It releases and reapplies pressure at that wheel so it keeps rotating, preserving steering, without shortening every stop.
Multimedia and Connectivity
Bluetooth carries a wireless link to a phone, handling call audio and streamed music over the same connection, so sound reaches the audio system without a cable, unlike the wired USB and AUX inputs.