Originally Posted by Moisture

My Trek Verve E-Bike is roughly roughly 0.6% worn, according to my chain wear checker after 1400km. I plan to replace the chain once it can easily slip through "0.75". At this point, I can push it all the way through when using some resistance.

I figure that, while it's not drastically worn out or anything, it's getting fairly close to the point where the rest of the drivetrain will start to wear much quicker. I changed my rear cassette to something with different ratios about 400km ago.

Does this sort of wear give any indication to how much stress the chain has been subjected to throughout its use? What sort of mileage intervals can you expect an average chain to endure under different riding conditions?