Dealers won't accept Credit Cards, so it'll need to be a Debit Card, (or possibly a Bankers draft, Money Transfer, etc) - but like The Doc said you should really be having a chat with the Dealer about this since they'll be able to inform you better about what specifics they do, some dealers can act differently to others. E.g. When buying from a Car Supermarket in the past I paid using a couple of Credit Cards, but recently at a VW Dealer I was told they don't accept Credit Cards, only Debit Cards, and I suspect not cash (nobody likes holding that sort of money on site and they have to pay to put it in their Bank).