Can't afford my car payments?

i bought a new car, new to me 7 days ago. within 5 days of having the car the check engine light came on ultimately resulting in an oil leak and upon seeing the car it had 2 other leaks. i also managed to get into a fender bender with the loaner car the dealership gave me. great first car experience right? anyhow i wont be able to afford the increased insurance and car payment. i bought the car in california "as is". is there anything i can do to get my money back with the dealer? trade it back to him and if that fails anything else i could try to do so i dont default on this loan? please give any advice you might have im in a real jam here