I cannot recommend this site. I made a reservation for a car with Dollar with Kayak but I was completely surprised by completely different prices when I finally picked up the car. I really don't have any confidence in their quotes, so why use it?
When I wrote an email complaining about the discrepancies (I will mention these at the end for the details-oriented persons) this is the completely unhelpful answer I got:
Hi, The prices you see on KAYAK should be the same as what you see on the booking site. However, it looks like that travel provider may be having issues with the accuracy of the data they are sending us. In any case, we will use your report to help us improve data quality with them. Thanks for letting us know about this! Kind regards, Walter KAYAK Systems Engineer
The details of my complaint:
Dear Sir/Madam, The rates you quoted were not honored by Dollar. When I asked for an extra day, the discrepancy between the price you quoted for 7 days ($205) rose to $294 with the extra day! The attendant said Kayak might have had problems figuring taxes, Whatever the reason, the end result is that I was seriously mislead by Kayak. This was extremely disappointing and I really don't think I can trust the rates kayak quotes anymore; I think it i better to book with the rental companies directly. I would appreciate if Kayak could compensate me, in some way, for the discrepancy.