How can I buy a second car?

Go to another lot or directly to your bank and talk to them about a car loan. DAAAAA!

Try an app that sells cheap cars my mother uses it

That income is barely enough. Buy him a bus card to find a job

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There is some reason you need a co-signer and I have a sneaky suspicion this is YOU (the 16 year old wanting a car) asking this question

NO 16 YEAR OLD BOY NEEDS A DAMN CAR so he can wreck it up or kill someone proving a point to YOUR friends.

Your car payment is about what we paid per month for two vehicles. We always buy used (usually 3-4 years old) and usually never pay more than $10,000 per vehicle. We usually get at least 10 years out of our vehicles. I would suggest buying a used vehicle, the cheaper the better.

Try Carmax or drivetime. The interest rate will be high though, or buy him a used care for $1500

If you need a co-signer, your credit isn't good enough and you shouldn't be taking on another payment. Wait a couple of years. A 16 yr. old doesn't need a car and it can be more trouble than it's worth. Can he afford the gas and insurance? If you take out a loan for the down payment, it will make your credit score worse and will be at a higher interest rate than a car loan would. Waiting a couple of years and saving up the down payment is a much better option.

Wait until you can afford it .....get a second job and have your son get a job.

Have you even thought about car insurance for a young male ?

It's expensive ! ! !

Sounds like you are planning on buying an expensive car for a 16 yo - - give-up on that idea. The rich can afford new cars for their kids to wreck (usually, they lease them) . . . it's crazy for you to think of taking-on debt . . . and, how much have you set-aside in his college fund? That's more important and right around the corner.

Have a chat with him - have fun looking for a funkie cheap-but-safe car . . . if he wants something showier, he can get a job and pay for it - but again, sounds like you don't have a closet full of ready cash, so he should be thinking about college costs, too.