We rented cars for a year and the savings are indeed substantial. There are, however some caveats to note. You must check your credit card auto insurance coverage, as there are specific exclusions and requirements. For example, my credit card company wants a mandatory police report for any damage incident, otherwise they will not pay. you must fastidiously check the car for damage, inside and out, before you sign it out. You are responsible for any damage to the car if you return the car early and park it in their lot.

Picking up and dropping off the rental car was becoming inconvenient. If you are single this may not be an issue. With a family it can get complicated, as you may have an event mid week, and taking public transit might be more hassle than it is worth. To each his own.

We found that we were unconsciously planning our lives around the rental car schedule vs a more normal and spontaneous family schedule. This is not terrible, but was a constraint that we did not like.