We listen to audio books in the car when we are on a long (>1 hour) road trip. My daughter, who is 2, watches children's TV on an iPad in the back seat during these trips and is perfectly happy to do so - it's a nice treat for her since she's not allowed TV at home.
But, a lot of audio books that are top picks have sexual or violent scenes. For example, on our last trip there were some particularly graphic parts in the literature we were listening to - Elena Ferrante's 'Story of a New Name' (not that it is thought of as a hard-core book, in fact, it's critically acclaimed and a very good novel).
For now, our daughter is clueless but I can see that with her vocabulary expanding at a very quick pace, she will understand the words in our story if she chooses to listen. I prefer not to have to switch over to young adult books until she can really enjoy the story too.
How can I choose (still) good literature that avoids adult language and themes, without learning the entire plot ahead of time?
Edit: I know sites like https://www.commonsensemedia.org/ exist, but they only rate children's programming...