Molim te, izađi iz auta i zatvori vrata.

Molim te means please in this sentence.

Literally, molim means I ask / I beg, and te means you in the accusative case. So word-for-word it is something like I ask you.

In everyday Croatian, though, molim te is a very common way to say please when speaking informally to one person.

It is not grammatically necessary. You could say:

Izađi iz auta i zatvori vrata.

That would still be correct, but it sounds more direct, more like a plain command. Adding Molim te makes it softer or more polite.

Izaći is the infinitive: to go out / to get out.

Izađi is the imperative form for you singular informal, meaning:

Get out / Come out

So in this sentence, Croatian is using the command form, just like English uses get out instead of to get out.

The same thing happens with:

• zatvoriti = to close
• zatvori = close!

They are both imperative forms used when telling one person what to do.

Here they mean:

• izađi = get out
• zatvori = close

These are the 2nd person singular informal imperative forms, used when speaking to one person you address as ti.

If you were speaking formally or to more than one person, you would use:

• izađite
• zatvorite

For example:

Molim Vas, izađite iz auta i zatvorite vrata.

After the preposition iz (out of / from), Croatian uses the genitive case.

So:

• auto = car nominative
• iz auta = out of the car genitive

This is a very important pattern:

• iz kuće = out of the house
• iz grada = out of the city
• iz škole = out of school

So auta is the genitive singular form of auto.

Yes, vrata is grammatically plural in Croatian, even when it means a door.

It is a plural-only noun in normal usage. So Croatian says:

• vrata su zatvorena = the door is closed
  literally something like the doors are closed

This is just something learners need to get used to. Even for one door, Croatian usually uses vrata, not a singular form in everyday standard language.

So:

zatvori vrata = close the door

Because Croatian usually does not need to state the subject pronoun when it is already clear from the verb form.

In English, you say:

Get out of the car and close the door.

The subject you is understood.

Croatian works the same way here. The endings of izađi and zatvori already show that the speaker is addressing one person informally.

You could add ti for emphasis, but normally you would not:

Ti izađi iz auta...

That would sound more emphatic, contrastive, or marked.

Yes, it is important.

Croatian often uses perfective verbs in commands when the speaker wants the action to be completed as a single whole action.

Here:

• izaći = perfective, to get out
• zatvoriti = perfective, to close

So the command means:

• get out completely
• close the door completely

This is very natural in Croatian, because the speaker wants a finished result.

If an imperfective verb were used instead, the meaning could sound different, depending on context: more about process, repetition, or ongoing action.

So in this sentence, perfective is exactly what you would expect.

Yes, i basically means and.

So:

izađi iz auta i zatvori vrata
= get out of the car and close the door

In context, it can also feel a little like and then, because the actions happen in sequence:

1. get out of the car
2. close the door

But grammatically, it is just the normal conjunction and.

Yes, Croatian word order is more flexible than English word order, though some versions sound more natural than others.

The original sentence:

Molim te, izađi iz auta i zatvori vrata.

is very natural and neutral.

You could also hear variations such as:

Izađi iz auta i zatvori vrata, molim te.

This places molim te at the end, which is also common.

A different order might be used for emphasis, but the original is the most straightforward and natural form for a learner to remember.

The difference is informal vs formal.

• Molim te = please, when speaking to one person informally
• Molim Vas = please, when speaking formally or to more than one person

So this sentence is addressed to one person in an informal way.

The formal version would be:

Molim Vas, izađite iz auta i zatvorite vrata.

Notice that not only te changes to Vas, but the verb forms also change:

• izađi → izađite
• zatvori → zatvorite

A simple pronunciation guide is:

MO-lim te, EE-za-jee ees OW-ta ee ZAT-vo-ree VRA-ta

A few helpful points:

• lj, nj, č, ć, đ, ž, š can be tricky in Croatian, but this sentence does not contain most of those.
• đ in izađi sounds somewhat like the soft j sound in judge, but softer.
• c in auto is not present here, so that part is easy.
• Croatian spelling is quite regular, so once you know the sounds, pronunciation becomes much easier than in English.

A more natural breakdown is:

Molim te | izađi iz auta | i zatvori vrata.

Yes.

• auto = car
• automobil = automobile / car

So you could say:

Izađi iz automobila i zatvori vrata.

That is grammatically correct, but iz auta sounds more everyday and conversational.

So for normal speech, auto is usually the more natural word.