There is always a security depositZero excess does not mean zero deposit. With a credit card, 1,000 ringgit are blocked, not charged; with a debit card, the deposit is paid online and refunded after you return the car.
The additional driver is charged10 ringgit per driver, once for the whole rental.
The balance is paid in ringgitAt the counter, by credit card, before you get the keys. Or everything online with a debit card.
You need an International Driving PermitFor almost every licence, including Italian and UK ones, together with your national licence. The rules by country are below.