Yes, many travellers find peace of mind in reserving a car before their flight. It saves you having to compare car hire at Rome Fiumicino Airport, so you can get on the road quicker. Booking in advance tends to be cheaper than on arrival, too - so do some research before your flight to find the best match for your budget. Many rental companies can be reached by phone, email, and online to create a reservation. Search car hire on KAYAK