The car started making a noise in the engine on the next to the last day of the rental. We called roadside assistance and they sent a mechanic to look at the car and possibly tow it. They arrived within two hours - and took the auto. When we had our concierge at our hotel call Hertz at the Dunkirk office to let them know what was going on - the informed her that if the mechanic determined that the noise was "our fault they would be charging us the $750 deposit that they demanded at rental". They also demanded $181 for fuel (in case we did not fill it up) We had filled up the car just before the noise started. We have not heard from Hertz about their final decision - but we fear that it will cost us close to $1000 to do this rental (on top of the rental cost) We need this resolved ASAP to insure that our funds are returned to us. The car had 6000 km on it when we rented it and we used it for about 500 km We did not abuse the car in any way and did not even go up steep hills or have any rain. The comments from the Dunkirk office were uncalled for and left us very worried that they would blame us for the mechanical problem. Please find out what is going on and handle the deposits that we left with them at the time of rental. Thank you. Connie Lane Christy BTW - we were stranded and had to find alternative means to get back to Dunkirk to take the train that we had reserved. Very scary and frustrating.