Hybrids do not have a traditional starter like non-hybrids. The electric dc motor just spins the engine over to start it. Not a regular starter. Thus that is why we have not heard of starter failures in the Prius.
M3 on the other hand most likely does use a traditional starter since its a non-hybrid.
2017 M2 on order
2011 BMW M3 Sedan Alpine White
Picked up via ED 9/27/2011 & Redelivered 11/23/2011 **SOLD**