Last night, my 4 year old Latio suddenly vibrated terribly afetr move off from traffic light, scared and called Insurance company immediately to tow to to Tan Chong Motor, today I was informed 3 out of 4 ignition coils were damaged, the last one also degrade, might not last long. For safety and balance, they requested to replace 4 coils together. total cost was 800+,

Just wondering, what is the chance that 3 coils spoil at the same time? is it necessary to replace all the 4 coils? anyone encountered such issue before?