Learn Hardcore Finnish: Minä pesen auton ulkona.

In Finnish the verb ending already tells you who is doing the action. Here -n on pesen marks first person singular, so Minä (“I”) is redundant unless you want to add emphasis or clarity. It’s common in spoken and written Finnish to drop the subject pronoun.

How can you tell who is washing the car if you omit Minä?

The personal ending on the verb does the work. In pesen, the -n ending signals “I.” Every Finnish verb form carries person and number, so you know it’s “I wash.”

Why is the verb “wash” in Finnish written as pesen and not something like pesaan or pesin?

Pesen is the first person singular present form of the verb pestä (“to wash”). Type-2 verbs like pestä form the present stem by dropping t (yielding pese-) and then adding the personal ending -n for “I.”

Why is the car called auton instead of auto?

Auton is the accusative (direct object) form of auto. In Finnish, a specific, completed object often takes the -n ending. So “I wash the car” becomes pesen auton.