Well the only trouble I had with mine(blue one) was two ECM which I should say dealer covered the cost of both of them.............But my wife's (yellow one) still has the factory one!!!!...........I would not let that bother you or stop you from buying them though....I love these Quads ,great choice in my view...........Smooth ride lots of ground clearance,storage, etc......

If your wondering about the two ECM's that I had replaced on my blue one:
1: first one was shutting the Quad off(motor)when the headlight switch was turned on!!
(solid state circuit breakers inside the ECM)
2: second ECM was turning the cooling fan for the rad on without the key even being in the switch and without the quad being hot. then a dead battery..........


Other than that great quads.......My wife and I are very happy with them!!have over 1700 miles on mine since 2006!!!..............Caper...........