Avoid Rentalcars.com - waste of time. Go direct to the rental company
Renting a car through Rentalcars.com looked like good value. They sold me a rental for a BMW 5-series - required as we had 5 adults for a long journey. When I got to the rental desk I was offered a Ford Focus as an equivalent car. I had to pay extra to upgrade to a Peugeot 5008. The problem seems to be that the rental company's definition of what constitutes an equivalent car differs from that of Rentalcars.com. Don't waste your time with this crowd. They're just another complication in the process and not willing to stand over what they're selling. Also their customer service was terrible - just a lot of stock responses. I will not be using them again.