Rented a 9 passenger van and an SUV from Avis/Budget in Sicily for a very special family vacation with three generations. The SUV was great but we had mechanical problems with the passenger van that caused us to need assistance from their roadside assistance. We went back to the Avis/Budget rental store and they told us to contact their roadside assistance and then call customer service to have them refund the money if they pick up/tow the car. We rented two additional SUV's from them as they had no more passenger vans. We had to try to coordinate with roadside assistance for two days in Italian to have them come look at the van. They finally coordinated a time and came with a tow truck and took the vehicle, giving us a receipt. Didn't even look at the vehicle and we could not communicate with them.
We proceeded to call customer service and they said that they could not refund us the money yet, even though we rented the two additional cars ourselves from the Avis rental store. They stated that you could not directly speak with Avis/Budget international customer service. They forward the info and case number and someone "will get back to you via email in 7-10 days.
They proceeded to withdraw the entire amount plus $300 from our bank account. Four phone calls back to this "customer service line" that is apparently not a customer service line, a dispute investigation with our bank and over 6 weeks later and we still have not heard anything from them. Finally reached out to the executive board contact form on their website and got a customer service representative to reach back out. They will not refund the money only the $300. Still in the process of disputing this.
If you have no car problems I am sure you will be fine but if you have any issues that require roadside assistance or contact with their international customer service, please be aware it is impossible to get support and they will take hours of your time trying to resolve the issue.