Should I pretend to know what my friends are talking about when they talk about cars?
How did you come up with something to say if you don't know about the topic? It sounds difficult to do.
I listened to the others and then I repeated what the others said
You should be honest with your friends. It is good to learn from others and be attentive to their conversation.
I suppose you are right.
Yeah, because lying will just snowball and you will just end up looking stupid when they catch on to you faking it. I am sure your friends don't mind that you are not knowledgeable about cars, and usually guys love to teach and give lessons when it comes to cars if the person they are talking doesn't know too much about it.