I intend to buy a used car in the next few days , and i have seen many samples of the purchasing contract on the internet , my question is : do i simply print and fill (and sign) the contract with the seller in order it to be a valid contract ? or should I sign it in an official place or get an official seal on it ?
No, you don't need a notary to witness the transaction, but you do need to pay 2% tax. Also, make absolutely sure that the previous owner's insurance is cancelled after two weeks (you can drive on his/her policy for that period). Register the car in your name asap. Bring along the contract and your ID.
You can, but I base my recommendation on past experience. Years ago I bought a car and left it to the previous owner to cancel his policy. I simply had my insurer cancel my policy for my previous car and make a new one (the other person's insurer might not recognise your no-claims bonus percentage, e.g.). Anyway, about two-and-a-half years later the old car's insurer phoned demanding money, saying that I hadn't cancelled the policy, so I had been insured by them all that time. The lady was politely told to go away, which she did after she was invited to sue me, but who needs all that crap?
I believe that would not be possible nowadays, as the policy would only be valid the day it was pre-paid (usually either a full year of half a year) and not renew by default after that - a notice would be sent out in advance as a reminder.
