Endless Sphere has instances of individuals with 15,000 - 25,000+ miles on inexpensive, Chinese direct drive motors. This isn't surprising since they have only one moving part. Some use a YESCOM kit (I have one too which has been bulletproof for four years, but I use it sparingly for errands), but other systems are good too. If you want to try a European-made bike, Stromer (probably many others) make beautiful bikes (I've ridden several, but not to failure), and haven't read about long term use. As you know, individuals use them daily in the EU, so there must be many durable ones. BTW, I ride my BBS02 off road only several times a week and it is still going strong after four years.
Last edited by 2old; 05-07-19 at 05:20 PM.