The article provides zero insight beyond anecodes. The fact a a specialist ebike repair company sees lots of broken ebikes tells you practically nothing about the frequency of problems. The anecdote about 5 failures in a warranty period sounds a bit suspicious and if true is probably a combination of bad luck and extreme usage, or possibly a design flaw in a specific bike model. It's also from a forum post from 5 years ago . That said, as a Bosch ebike owner myself, I'd love to see some decent stats on reliability of different systems. Had no problems myself so far and love it.