if you are behind on payments then yes they can
ONE day.
3 payments
The repo man will tell you that, but no it is not true.
Legally if you miss 1 payment you are delinquent and they can start repossession proceedings on their vehicle.
ABSOLUTELY
If "you" are the lienholder then yes. If you're not the lienholder or their authorized agent (e.g. a repo man working for them), then no.
As long as you are in default, they can repo. Try to catch up the month behind. Send $5.00-10.00, whatever.
Legally, ONE day. As long as you are in DEFAULT of your contract, the lender CAN repo the collateral. Read the contract for more on DEFAULT.
If you are up-to-date then no, if you are a cosigner there may be complications...
if you are behind at least 2-3 months behind in payments then they can come get it whenever they please
Yes, they can. Consistent communication is the car-key to your vehicular retention.