First thing to consider is that this is a very popular car for Chevrolet right now. Dealers are having no problems selling them. So don't expect much of a deal. You will most likely pay the MSRP (window sticker) price.
Insurance will be expensive for someone as young as you Just a fact of life. You will be purchasing this car with a loan. The lender will have a lien on the title. As a condition of this loan you will be required to have full coverage insurance on the car until the balance of the loan is paid off. You are on your own for insurance. I suggest using your local telephone book and call some local insurance agents. Find out if any will even give you a policy. Then get some price quotes for full coverage insurance. Compare rates and coverage and pick the best one for you. Plan on at a very minimum about $150 per month for insurance.
How much the car will actually cost depends on the exact model. Same goes for your down payment. You will also need to consider additional expenses like taxes, license, dealer handling fees, dealer prep, etc. Depending on your state sales tax will be somewhere around 6% of the purchase price.
For my example I will use the 1LT version. With no additional options the 1LT has a MSRP of $23,880. You will need at least 20% down payment of $5200 however the more you put down the easier it will be to secure a loan.
Figure on at least $1432 for sales tax. Add another $400 for dealer prep, dealer fees, license, and title. Figure on paying at least $26,000 for this car by the time you get it on the road.
Your actual monthly payment will depend on several things. How much money you put down. Your interest rate. At your age you won't have much of a credit rating so don't expect a good rate, maybe about 10%. How long you get the loan for will also make a difference. Hint, go for as short as possible. Your payments will be higher however you will pay less for the car in the long run as you won't be paying as much interest. Also, you are pretty much committed to keeping this car until it is paid off,
There are several loan calculators you can use to figure out your monthly payment. I give a link to help you get started.
For a 5 year loan figure on about $425 per month car payment and $150 per month for insurance. About $600 per month.
You will still want extra money for things like gas, food, and other living expenses. I hope you have a good steady job.
Good luck
THANK YOUUU its my dream car :3