We rented a car from Maggiore in Bologna, Italy last fall (through National Car Rental - i'm an executive member with them). I will never rent from this company again.
Rented from Bologna and dropped it off in Rome.
I filled up the car before returning by the return spot was on the 7th floor of a building. Instructions were to drop off the car on the 7th floor and bring the keys down to the first floor, so i did. They gave me my receipt and left. When the charge hit my credit card, they charged me for a full tank of gas, including refueling fee and Value added tax (came out to roughtly $175 more) for the rental. In additional to this over charge, they charged me $32 extra for who konws what. I disputed with my credit card co., they dismisssed it because Maggiore was not able to provide receipt or proof for that additional $32 charge. Seven months later, i received a letter from a collection firm in Italy stating that i owe that $32 and must pay within 15 days or they will pursue legally and will incur additional legal fees. What a scam. Beware of Maggiore...if you can help it, don't rent from them...
Rented the car Oct. 2009, received notice from collections July 2010.