text: I have been renting cars for about years and Sixt just provided me with the worst experience I have ever had My wife and I flew into the Phoenix airport with our two kids The line was only about nine people long but it took absolutely forever because of the fact they said their computer systems were down The staff was not very friendly or helpful Then when we got to the car itself the car seats were atrocious They were filthy and a couple of them were broken They did not have a single workable toddler car seat that was clean We ended up just eating the cost of the rental in order to walk over to National and rent a decent car with a safe car seat Start to finish this was the worst car rental experience I have ever had and I would not recommend Sixt to anyone