I know where you are coming from, the convenience of having your own ride is always a preference instead of daily commute. The mistake here is not having all the information before sealing the deal but that is too late now. All you can do is decide if you can afford the car or not, if yes then by all means keep it but do not think that you were cheated in any way its a learning curve for you and for all let us always think before we act and analyze if we have the resources to do it in the long term because if not then we will be in a more difficult situation than before...just my 2 cents