When should I replace ignition coils? Is there a definitive mileage or time frame that signals the necessity for such a replacement? Could it be that specific symptoms, like a rough idle or decreased fuel efficiency, act as harbingers of impending coil failure? Furthermore, what role does the make and model of my vehicle play in determining the optimal replacement interval? Should I be vigilant in monitoring the performance of my ignition system, looking for tell-tale signs such as misfiring or difficulty starting the engine? Might environmental factors, such as extreme temperatures or frequent short trips, exacerbate wear on these components? Additionally, is it advisable to replace ignition coils preemptively, even if they appear to be functioning well, to avoid the risk of roadside malfunctions? Ultimately, how can I ensure that my vehicle’s ignition system remains in peak condition for optimal performance and reliability?