Book National car rentals in San Francisco

Cons: Car seats were really bad value for $13/day per piece (we needed 2). They were the cheapest possible seats, it would have been cheaper to just buy them. There was no good solution for a 42lb kid - too young for a booster seat, too big for the car seat. We had to shoehorn her into the available seat. Pickup of the car was good, but the person in charge of car seats was rude and seemed annoyed by my request to see available seats.

Cons: It's my own fault for not investigating closer, but I was under the impression that my San Francisco rental would be picked up at the airport. When I arrived at said airport with my husband, two kids, 4 suitcases, 4 backpacks, and 2 car seats, I was informed by a rude National employee that my rental was to be picked up at the train station, which was at least 30 minutes away, and she could do nothing to help me. I ended up renting a car from Alamo by calling and reserving a car on the spot. I am unlikely to use Kayak again.

Cons: We found a chocolate chip cookie on the floor in the front seat and a candy bar wrapper left in the console.

Cons: had to pay more than was quoted