don't know the specifics on pricing, i do know that you can hire a cab for a few hours or for the entire day, for a very reasonable fare, and you get a ride and a tour guide, i think its easier, much less hassle and probably cheaper than renting a car.
I would recommend getting a cab - as the previous poster said, you can hire them for a few hours and agree on a price beforehand and it usually is very reasonable. Just be sure you AGREE on a price - be certain that your cab driver speaks good enough English or you speak good enough Spanish to make sure you are on the same page as far as prices.
Victory, here I come!! - October 2, 2004
We just got back and we rented a minivan in Cozumel. We had 6 in the group and did not think we would have much luck with finding a big enough taxi. We were wrong. A lot of the taxis are minivans.
It was $90 for the day but with insurance and taxes it was more like $125. Gas was $2.88 gallon/liter. Be careful when you fill the car back up, we told the guy $10 but he kept filling the car. Lucky we caught it in time to only have to pay $3 over. If I had to do it over again I would have hired the driver.
Our taxi to Playa Sol in Cozumel was $30 round trip. We saw many rental cars being stopped by road blocks and our driver said the "authorities" were basically shaking the drivers down for extra money. I'd go with the taxi driver.