Я хочу продать машину.

Because it is the direct object of the verb продать (to sell), so it takes the accusative case.

• Dictionary form: машина
• Accusative singular: машину

This change is very typical for feminine nouns ending in -а:

• книга → книгу
• сестра → сестру
• машина → машину

So in Я хочу продать машину, the speaker is acting on the car, which is why машину is used.

This is about aspect, which is very important in Russian verbs.

• продать = perfective
• продавать = imperfective

In this sentence, продать usually means the speaker wants to complete the sale as a single result: to sell the car.

By contrast, продавать would suggest something more like:

• selling in general
• being engaged in the process of selling
• selling repeatedly or habitually

Compare:

• Я хочу продать машину. = I want to sell the car.
  Focus: getting it sold, a completed result.

• Я хочу продавать машины. = I want to sell cars.
  Focus: selling as an activity, maybe as a job or ongoing action.

So продать is the natural choice if you mean one specific sale.

Because Russian does not use a separate word like English to before the infinitive in this kind of sentence.

• хочу = I want
• продать = to sell

Russian simply puts the infinitive after the verb:

• Я хочу продать машину.

This is normal. The infinitive form itself already carries the idea of to sell.

Yes, often you can.

Russian verbs usually show the person clearly, and хочу already means I want. So:

• Я хочу продать машину.
• Хочу продать машину.

Both are correct.

Including Я can make the sentence:

• clearer
• more explicit
• slightly more emphatic

Omitting it is common in conversation when the subject is obvious from context.

No, Russian word order is fairly flexible.

The most neutral order here is:

• Я хочу продать машину.

But other orders are possible, depending on emphasis:

• Машину я хочу продать.
  Emphasis on the car.

• Продать машину я хочу.
  Emphasis on the idea of selling it.

Even though Russian allows movement, not every order sounds equally natural in every context. The original sentence is the most standard and neutral.

A simple pronunciation guide:

• Я = ya
• хочу = kha-CHOO
• продать = pra-DAT'
• машину = ma-SHEE-noo

Stress:

• хочу́
• прода́ть
• маши́ну

A few useful notes:

• х is like the ch in Scottish loch or German Bach, not like English h
• unstressed о is often pronounced more like a
• the final ть in продать is a soft t

So a rough English-style approximation is:

ya kha-CHOO pra-DAT' ma-SHEE-noo

Because Russian has no articles.

So машину can mean:

• a car
• the car

The exact meaning depends on context.

Russian speakers understand definiteness from:

• context
• word order
• emphasis
• the situation

So one sentence can cover what English splits into a car and the car.

Usually no. In this sentence, the most natural meaning is that the speaker wants to sell the car, meaning to complete the sale.

If you wanted to emphasize the ongoing process of selling, Russian would more likely use the imperfective verb:

• Я хочу продавать машину.

But even that can sound context-dependent and sometimes less natural unless you really mean the process or repeated activity.

So Я хочу продать машину strongly suggests a single intended result: get the car sold.

Because when the same person both wants and does the action, Russian usually uses:

• хотеть + infinitive

So:

• Я хочу продать машину.
  = I want to sell the car.

This is different from sentences where one person wants someone else to do something. In that case, Russian often uses чтобы:

• Я хочу, чтобы он продал машину.
  = I want him to sell the car.

So the infinitive is used here because I am both the wanter and the seller.

Yes. Машина is a very common everyday word for car.

Another word is:

• автомобиль = automobile / car

But машина is much more natural in ordinary conversation.

A rough comparison:

• машина = everyday, common
• автомобиль = more formal, technical, or official

So for normal speech, машина is exactly what learners should expect to hear.

You put не before хочу:

• Я не хочу продать машину.

However, in real Russian, this sentence can sound a bit awkward depending on what exactly you mean.

More natural possibilities are often:

• Я не хочу продавать машину. = I don’t want to sell the car.
• Я не хочу машину продавать. = I don’t want to sell the car.
  Slightly more conversational emphasis.

Why is продавать often used in the negative? Because with negation, Russian frequently prefers the imperfective when talking about not wanting to do something in general.

So while не хочу продать is possible in some contexts, не хочу продавать машину is usually the safer and more natural choice.

It breaks down like this:

• Я = subject pronoun, I
• хочу = finite verb, want
• продать = infinitive, to sell
• машину = direct object in the accusative case, car

So the structure is:

subject + want + infinitive + direct object

This is a very common Russian pattern, and learning it will help with many other sentences, for example:

• Я хочу купить книгу. = I want to buy a book.
• Я хочу посмотреть фильм. = I want to watch a film.
• Я хочу открыть окно. = I want to open the window.