The waiting time was a bit long.

WE checked the car when we rented it. When we returned it they told us that we had damaged the inside of the door. We said we had not. When the OK rental man came to check the car the first thing he did was open a door and say the inside was damaged. It was as if he knew where to look. He did not check any other door. This could not have happened when we had as as we drove straight from the airport to our friends Finca which has high fences and an electric gate. The car did not move the whole time. It cost 17 euros to fill the car up. They have not refunded the 1200 euros excess nor the 200 euros for the fuel. We have contacted out credit card company to dispute the charge. This ifs obviously an insurance scam by the company. We will fight this.

It was very easy to book. I will never book with OK rentals again. The pick up was ridiculous as we waited over an hour to collect our car and then were accused of damaging it.

Lots of hidden fees (gas, early drop off, large deposit, etc) terrible customer service on day of pick up. The service rep made us so angry we wanted to cancel but then were informed we couldn't without talking to the third party booking service. Not in Bilbao airport and very difficult to locate for return. Only positive thing I can say is the car was in good condition. Still waiting for deposit, though it's only been a few days. Wish I would have read more reviews prior to reserving. Won't book with them again.