Auto Insurance does not always get cheaper as the car gets older.
Even though a vehicle gets older and decreases in value your auto insurance will not always get cheaper but sometimes it does.
However if you have a paid off car then you can switch from the higher cost full coverage auto insurance to the lower cost liability auto insurance.
When a car gets older and decreases in value then there's no sense in paying for full coverage auto insurance.
On my older vehicles I have Liability auto insurance and pay only $25.00 per month for my truck and $35.00 per month for my cars auto insurance.
Liability auto insurance will always be cheaper though than full coverage auto insurance.
The length of time that you have to change your auto insurance when you buy a new car is between 30 days to as little as 7 days.
The actual time you have to change auto insurance to the new car depends on the auto insurance company but most auto insurance companies allow a grace period of 30 days before you have to change your auto insurance to the new car.
When you buy a new car or other new vehicle your auto insurance company will have a grace period that is between 7 to 30 days in which you have to update your auto insurance policy to insure your new car or other vehicle.
As long as you change or update the auto insurance policy to the new vehicle within 30 days you should be fine.
Auto Insurance will always be higher on Luxury cars than it would be on non luxury cars.
Luxury cars are more expensive than cheaper non luxury cars are and so that means the Luxury car has a higher value to it.
So when your vehicle is worth more then it will cost more money to insure with auto insurance.
If you want cheap insurance then you should not get a Luxury car but if you can afford a Luxury car then you likely can afford the higher cost insurance it takes to insure a luxury car.
Cheaper Insurance is for non Luxury cars and older cars.
If you have an older car or truck that you own with no bank loan or car payment then you can put just Liability insurance on the car or truck or other vehicle.
Then the Liability auto insurance will always be cheaper than full coverage auto insurance.
But with a newer vehicle that you're making car payments on the lender or auto finance company will require full coverage auto insurance on the vehicle until the vehicle is paid off in full.
After you pay off the vehicle and own the vehicle then you can switch to having liability auto insurance on the vehicle.