The counter wants a card it can hold a deposit on. It wants a driver old enough for its rules, and a licence it can read.
Sixt wants a valid credit card and refuses prepaid cards of any kind. Maggiore wants a credit card in the renter’s name. Enterprise takes a debit or credit card in the renter’s name, and ACI warns it is “almost impossible to rent a car without a credit card”.
Bring a credit card in the driver’s own name — not a debit card you hope they’ll accept.
ACI, Italy’s automobile club, says some companies want a minimum age of 21 or 25 and a maximum of 79, and a licence held at least a year. Enterprise’s station desk charges young drivers €22 (about US$25) a day at 19 to 21 and €11 (about US$12) at 22 to 24, both before VAT and station fees. Sixt’s terms add a surcharge under 25 without the amount.
At 23 that’s €11 a day on top of the rate, or about €13.40 once Italy’s 22% VAT goes on — our arithmetic from Enterprise’s station page.
Enterprise’s station desk charges €5 (about US$6) a day for an additional driver, before VAT.
The 2018 Avis Budget Italia tariff set a €1,000 (about US$1,120) damage excess on small cars (groups A to C) even with collision cover. That document is old. Trust the number on your quote, not ours.
Enterprise’s station page allows its cars into every EU country plus Norway, Switzerland and the UK, “No additional charges apply”. Sixt’s terms say some foreign countries may be off-limits depending on the car and booking.
The licence question, the International Driving Permit, is on our should-you-rent page. Sort it before you fly, not at the counter.