This page helps you verify bulb sizes for the 2017 BMW i3 by lighting position, so you can match the correct bulb to each exterior and interior lamp before you buy. Because BMW used different lighting setups depending on trim, body style, and market, checking the exact location is the safest way to confirm fitment.
For the 2017 BMW i3, many exterior lights use LED assemblies, while several interior positions still use replaceable bulbs. That means some locations are serviced as complete LED units, and others use standard bulb types such as 2825/98, H11, or 64132. Use the chart on this page to narrow down the correct replacement by function, not just by vehicle name.
Fitment can vary with trim level, lighting package, and whether the car has factory LED equipment or a different regional specification. Some positions may be LED-only and not use a traditional replaceable bulb, while others can be upgraded with aftermarket LED conversions if the socket and housing allow it. Before ordering, it is smart to inspect the installed bulb or assembly, compare the connector and base style, and confirm whether your i3 already has LED lighting in that position. This is especially important for headlamps, turn signals, and exterior marker lights, where halogen, LED, and retrofit parts may not interchange cleanly.