The build quality is so bad they are going under in warranty claims. They also don't use common components, so very few bike repair shops in high-volume markets (e.g. Netherlands) are willing to touch VanMoof bikes.
Apparently they spent €8M on warranty claims, on an income of €83M, so ~10% of their income. It's not really clear to me if this is exuberantly high, especially since this may also cover non-traditional "warranty" like their theft recovery.
I think it is crazy high, should be well below 1-2% for any "mature" (simple) product, for more complex products (let's say cars) it should be below 5%:
