It is very important to change your spark plugs when they are due for replacement. Today’s vehicles have been designed to travel longer distances from service to service. The components which make up your ignition system have also been redesigned to last longer and in worse conditions. Unfortunately, this gives vehicle owners a false sense of security that because their vehicle is not running rough then everything under the bonnet must be fine. This is certainly not the case, when spark plugs are not replaced at the manufacturers recommended mileage, you put a lot of pressure on the components and when they fail this can lead to huge repair bills. so something as simple as regular spark plug changes will keep your ignition system healthy and keep you on the road, reducing the amount of mobile mechanic perth calls you make.