Let's see $8 a month = $96 a year saved.
Lawyer to try to keep you out of prison after you get caught and are arrested for insurance fraud: maybe over $10,000.
Lost wages if you have to spend a year in prison for insurance fraud: $10,000 to $100,000
Cost of fixing or replacing your car, yourself, with your own money, without using insurance, because they won't cover you if they discover you lied: $1,000 to $20,000.
Amount you have to pay if you cause someone else to be injured or killed and your insurance won't pay because you lied: maybe $10,000,000.
I have not added up the total, but it's pretty clear that a lie will cost more than it saves.