A oficina vai alinhar o carro.

In this sentence, oficina means auto repair shop, garage, or workshop.

So A oficina means the repair shop.

Important: in other contexts, oficina can also mean a workshop in the sense of a class or hands-on activity, but here it clearly refers to a place that works on cars.

Because oficina is a feminine noun in Portuguese, so it takes the feminine singular article a.

• a oficina = the repair shop
• uma oficina = a repair shop

This is something you usually just have to learn with the noun.

Vai alinhar is the very common near future / periphrastic future structure in Portuguese:

• vai = goes / is going
• alinhar = to align

Together, vai alinhar means is going to align or simply will align.

In everyday Brazilian Portuguese, this structure is often more common than the simple future:

• A oficina vai alinhar o carro. = The shop is going to align the car.
• A oficina alinhará o carro. = The shop will align the car.

Both are correct, but vai alinhar sounds much more natural in everyday speech.

Historically, it comes from ir + infinitive (to go + infinitive), but in modern usage it usually just functions as a future tense.

So in this sentence, you should understand vai alinhar as:

• is going to align
• will align

It does not usually imply physical movement. The shop is not going somewhere to align the car. It just means the action will happen in the future.

Literally, alinhar means to align.

With cars, it often refers to wheel alignment or aligning the suspension/steering setup so the car drives properly.

So depending on context, alinhar o carro may be understood as:

• to align the car
• to do a wheel alignment on the car

In real-life automotive Portuguese, this is a very common use.

Portuguese uses definite articles much more often than English.

So o carro means the car, and using the article is very natural here.

Compare:

• alinhar o carro = align the car
• alinhar carro = not natural in this sentence

In Portuguese, leaving out the article often sounds incomplete or changes the meaning.

Yes, but A oficina vai alinhar o carro is the most neutral and natural order:

• A oficina = subject
• vai alinhar = verb phrase
• o carro = object

You could change the order for emphasis, but it would sound less neutral. For example:

• O carro, a oficina vai alinhar.
  This emphasizes the car, but it is not the normal everyday order.

So for learners, the standard pattern here is:

subject + verb + object

Yes, absolutely.

That sentence means something like:

• The shop is going to do the car’s alignment
• The shop is going to perform the alignment on the car

Compare:

• A oficina vai alinhar o carro. = The shop is going to align the car.
• A oficina vai fazer o alinhamento do carro. = The shop is going to do the alignment of the car.

Both are natural. The first is a bit more direct; the second uses a noun phrase (o alinhamento).

A rough pronunciation guide for an English speaker is:

• A oficina ≈ ah oh-fee-SEE-nah
• vai ≈ vai / vye
• alinhar ≈ ah-leen-YAR
• o carro ≈ oo KAH-hoo (with a Portuguese r sound)

A few notes:

• oficina is stressed on ci: o-fi-CI-na
• alinhar is stressed on the last syllable: a-li-NHAR
• The nh in alinhar sounds like the ny in canyon
• In Brazilian Portuguese, carro has a strong rr sound, often like an English h produced in the throat

No. Oficina is the place, not the person.

• a oficina = the shop / repair garage
• o mecânico = the mechanic

So this sentence literally says the shop will align the car. That is very normal in both Portuguese and English, because a business can be treated as the subject of the action.

Because o carro is the direct object of alinhar.

The verb alinhar can take a direct object directly:

• alinhar o carro
• alinhar as rodas = align the wheels

No preposition is needed.

English works similarly here:

• align the car
• not align to the car

Yes, but the meaning changes slightly depending on context.

Vai alinhar o carro by itself can mean:

• (Someone/it) is going to align the car
• Are you/he/she going to align the car? depending on intonation and context

Portuguese often allows omitted subjects when the context makes them clear. But in your original sentence, A oficina is included to make it explicit that the repair shop is the one doing the work.

The sentence is correct in both Brazilian and European Portuguese, but it feels especially natural in Brazilian Portuguese because ir + infinitive (vai alinhar) is extremely common in everyday Brazilian speech.

So a Brazilian learner should definitely get comfortable with this pattern:

• vou fazer
• vai chegar
• vamos sair
• vai alinhar

It is one of the most useful future constructions in Portuguese.