It's generally not a good idea to mix and match different types of spark plugs in your vehicle. Spark plugs are designed to work with specific engine designs and compression ratios, so using a plug that's not specified for your engine can result in poor performance or engine damage. That said, there are some circumstances where it might be necessary to use a different type of spark plug. If you're having trouble finding the right type of plug for your car, consult a professional mechanic or the vehicle's owner's manual.