Auto insurance yearly payment

So I would like to purchase a years worth of auto insurance at one time, but when I look for rates on the internet it is always for 6 month intervals. is it possible to purchase a years worth at once? if so does it reflect in your price?

It's better for you to purchase the insurance by monthly payment. If something happens to your car, you won't lose your money for nothing.
Let's say your payment per year is 500$. You can pay them at once, or pay 45$ a month (they charge you around 5 more $ per month for monthly payment) and you still have the same insurance. Paying everything at once = you economize around 12-15% of the money.