Learn Italian: Il meccanico è libero, ci porto subito la macchina. - The mechanic is free, I am taking the car there immediately.

The word ci is a locative pronoun meaning 'there'. It replaces the destination, which in this case is the mechanic's shop. In Italian, these small pronouns (called clitics) usually go immediately before the conjugated verb, which is why we say ci porto instead of porto ci.

Why is porto used for 'taking' the car instead of prendo?

English uses 'take' for many things, but Italian is more specific. You use portare when you are carrying, taking, or bringing something to another location. You use prendere when you are grabbing something, picking it up, or taking transport (like a bus or train).

Does libero mean the mechanic works for free?

No, libero means 'free' in the sense of being available, not busy, or unoccupied. If you want to say something costs no money (free of charge), you must use the word gratis.

Why is subito placed right after the verb instead of at the end of the sentence?

In Italian, short adverbs of time like subito (immediately) often go right after the conjugated verb. You could also put it at the very end (ci porto la macchina subito), but placing it directly after the verb emphasizes the urgency of doing it right now.