Contracts generally need two signatory parties.
In Pennsylvania, a buyer's order only becomes consummated once the buyer has taken delivery of the vehicle. Not at the signing, but once the vehicle leaves the sellers property.
In the state of Georgia there is no grace period after buying a used car. Once the contract is signed the car belongs to the buyer and they cannot change their mind.
If your question is "can the contract be null and void" if signed only by the primary buyer and not by the co-signer? Depends. If the contract is in both names-yes. If the contract is typed up "only" in the buyer name-no. If the loan is conditioned to both signing, yes.
Right up until the point when the contract is signed, the buyer can change his or her mind, and what the co-buyer thinks about it is an issue for the two of them to work out. After the contract is signed, it's pretty much too bad for the buyer if he or she has "second thoughts".
The contract is not enforceable unless both parties signed it. If the sellers changed their mind and didn't sign then you don't have a contract.
When it has been signed by the buyer and seller.
The date the Buyer signs it.
most definatly, and don't let the new company tell you otherwise.
If the selling dealer pays for some repairs on a car you bought "AS IS" then count yourself lucky that the dealer went above and beyond what he legally was required to do. If you are trying to get out of the contract on this technicality then you did not deserve the fair treatment the seller gave you. No court would ever void the contract because the seller helped you when he did not have to.
It depends upon the specific terms and conditions of the contract. If the contract simply states it is the buyer's obligation to secure financing, then you can NOTcancel the contract. If the contract states that the agreement is conditional upon the buyer's ability to secure a loan, then you CAN cancel the contract.
If the contract was supposedly made for a co-signer and lead signer then no, it would be non-valid if not signed by both parties.
The dealer typically never signs the contract when the customer does. The dealer principal does quite often. Sorry this is not a loophole, its still a binding contract. However if you signed an open contract where it doesn't say what bank anywhere on the contract its assigned to then a very good lawyer can help you. Sometimes dealers can have you sign a contact without getting an approval from a bank first so they can leave that part out for them to hand write it in later.