2016 Dash owner with 500 miles and 3 major issues. First, I have already noticed a marked decrease in battery life. I used to ride 8 miles each way back and forth to work in PAS 4 with 20% battery left when I got home. Now I can only ride in PAS 3 to work, then usually have to drop to PAS 2 part way home. Second, I have also worn out the 11 tooth gear in the cassette. The teeth look like shark fins and it slips constantly, so I can no longer use my highest gear which was already too low for several descents along the commute. Third, the push button throttle never worked. IZIP provided some troubleshooting advice, but no joy. I just got her in May, so I'll see how good the warranties are.