If is possible to give an indication of the average lifespan of the chain and gear wheels of an E-bike? Assuming: Cycling in all weather conditions (commute); Western European climate (10% of time rainy, snow is rare). Average monthly temperature ranges from 0 to 20. No Cycling off road. Open chain/gear (no case). Lifespan may be in km, or in years/months assuming about 3000 km/y.
closed as too broad by David Richerby, Criggie♦ Mar 4 at 19:03
Please edit the question to limit it to a specific problem with enough detail to identify an adequate answer. Avoid asking multiple distinct questions at once. See the How to Ask page for help clarifying this question. If this question can be reworded to fit the rules in the help center, please edit the question.
It’s impossible to give an answer because chain and sprocket wear is dependent on load as well as distance. Stronger or heavier riders apply more force. Riding lots of hills will do the same.
The best approach is to get a chain wear gauge and record how long a chain lasts for you and your riding.
Conventional wisdom is 2 or 3 chains per cassette. Inspect the cassette when you replace the chain.
Usual life span is around 3000km for regular use on an average road condition. We used to got a bad road and we noticed the lifespan improvement of the chains and gears since the road got fixed a couple of years ago.