Hahaha the translate got me laughing. Translated auto into car and was wondering WTF a car plant is hahahaha
It's most likely the leaves got wet and sun on them and burned like a magnifying glass or there was feed spilled and as the water evaporates it gets more concentrated and burns.
They don't look nutrient of bug related to me.
When plants are outside, they will get more marks and blemishes and small stuff like this is nothing to worry about.
I would however suggest to get bigger pots if you plant to grow more autos.
They enjoy having space for thier roots.