Very bad! Went to pick up my car I had booked in my work portal. First car dirty inside and out. Second car filthy look like somebody went road playing on red dirt. The third car was clean inside and out. They charged me an extra $84.00 in the end for the nicer car. I will never use Avis again.No vehicle is available on the day of picking up even the reservation has been confirmed causing my holidays trip to South Australia winery has been cancelled.Went smoothly with the car rental once we arrived. But we called ahead to change the reservation to one less day and when asking the car rental place about a refund, they directed us back to the booking website. We were then told, after the fact, that they didn't do refunds for unused days. It is not an unused day if I called ahead to change the reservation. Why would a car rental office tell us that the booking company would refund the money if they wouldn't? There is a serious lack of communication about booking and changing reservations. Will not use this service again as they have no problem taking your money...This appears to be another Priceline company. I used to have great experiences with hotels, but this is the second time I got tangled with a car rental company that was associated with Priceline. (different name this time) AVOID THEM... in fact... I am finished with Priceline altogether. They sneak in non-refundable charges... when you find out you have been screwed they say the deposit is not refundable. Must be very profitable.