LED is optional but cost plenty to buy. If you want LED daytime running lights for driving during the day the price in Sweden is 1900 SEK. If you also want LED headlights another 8500 SEK should be added. Is it worth buying LED on an electric vehicle where you do everything possible to increase the range?
First a little clarification. In some countries the daytime running lights with LED come as standard, but in Sweden, you pay for it. LED headlights means only low beam. Main beam always seem to be halogen on the BMW i3.
A standard pair of halogen headlights (low beam) consumes about 100 W. It is reasonable to assume that the run time is approximately three hours (40 km/h x 3 h = 120 km). That means the headlight pair consumes about 0.3 kWh during a charging cycle. It should be related to the 18.8 kWh battery to realize that it is equivalent to somewhere between 1-2 % of energy depending on driving conditions. LED consumes much less power of course, and perhaps there might be a difference in range of about 2 km.
The conclusion is that it is hardly worth SEK 10 000 extra for it because it will significally increase your range. Rather buy it because you like the looks of it.
For my part , I bought “5AK LED daytime running lights” but opted out of the more expensive “5A2 LED headlights”. Admittedly, I was thinking main-beam headlights when I read the accessory list and thought it was unnecessary as a city car rarely is out driving highroad at night. But “5A2 LED headlights” refers to the low beam and so during dark Swedish winter days it is lit almost all the time if you commute to work . What bothers me a bit is that the halogen headlights have a yellow tone compared to the U-shaped LED element underneath. Below some pictures of the different lights.
Maybe I should have chosen LED headlights also…