Many i3 owners also find the time delay between pressing the horn button and the horn actually honking to be excessive. Was that a problem for you as well? Because of this delay, it can be very difficult to honk the horn for a very brief time (i.e., a short beep) which is mostly what I need to do rather than to honk the horn for a longer period of time. I can't recall the last time that I actually honked the horn, but I understand that in some countries, horn honking is very common.
2014 BMW i3 Arravani Grey, Giga World, Tech + Driving Assist, Parking Assist, DC Fast Charging, JuiceBox EVSE