I would like to make people aware of other possibilities except using the owner’s car or renting one for the length of the stay.
I would never let a sitter use my car because of insurance reasons being very difficult in Germany but also because “my car” doesn’t actually belong to me. It’s a leased vehicle and I wouldn’t be allowed by the company to give it to someone else. The same applies to my husband’s car. His is owned by the company he works for and the only one else allowed to drive is me.
We live in the center of a small town and many shops and restaurants are easily reached by bike or foot so for most errands a car isn’t necessary. We have 4 bikes, two regular ones and two electric, which the sitters can use anytime.
However if sitters would like to rather drive than use public transport there is car sharing! One of these car sharing companies have cars available around the corner from our home and it can be rented for hours or days. It’s much cheaper than a car rental which you won’t need most of the time and you never have to worry about parking it. Simply return it and for your next trip reserve a new one!
So if an owner says the sitters can’t use their car I recommend not to discard the listing as not suitable for you but check (or ask the owner) if car sharing is available nearby. This is getting more and more popular especially in cities where finding a parking spot is either very time consuming and/or very expensive.