Il disco orario evita la contravvenzione.

Il is the masculine singular definite article, meaning the.

It is used because disco is:

• masculine
• singular

So:

• il disco orario = the parking disc

Even though orario follows it, the article agrees with the main noun, which is disco.

Because contravvenzione is a feminine singular noun.

So the correct definite article is la:

• la contravvenzione = the fine / the ticket / the penalty notice

A good clue is the ending -zione, which is very often feminine in Italian:

• la stazione
• la lezione
• la situazione
• la contravvenzione

Evitare is the infinitive, meaning to avoid.

In the sentence, the verb has to agree with the subject il disco orario, which is third person singular, so it becomes:

• evitare = to avoid
• evita = he/she/it avoids

So:

• Il disco orario evita la contravvenzione = The parking disc avoids/prevents the fine

Evita is in the present indicative.

More specifically:

• verb: evitare
• tense: present
• person: third person singular

So it can mean:

• avoids
• prevents

Depending on context, Italian present tense can also sometimes translate naturally into English as a more general statement, such as helps avoid or prevents.

Not always exactly. Contravvenzione can refer to a ticket, citation, penalty, or fine, depending on context.

In a parking context, it often means something like:

• parking ticket
• fine
• penalty notice

So the best English translation depends on the situation, even if the Italian word stays the same.

Because evitare is a direct transitive verb in Italian. It takes a direct object with no preposition.

So:

• evitare qualcosa = to avoid something

Examples:

• evitare un errore = to avoid a mistake
• evitare il traffico = to avoid the traffic
• evitare la contravvenzione = to avoid the fine

This is similar to English, where you also say avoid something, not avoid to something.

Yes, but the basic word order here is the most neutral and standard:

• Il disco orario evita la contravvenzione.

Italian can sometimes change word order for emphasis, but in an ordinary sentence like this, subject + verb + object is the most natural structure.

For example, La contravvenzione evita il disco orario would mean something completely different and unnatural here, because it changes who is doing the action.

Because disco orario is a fixed noun phrase in Italian.

Literally, orario is related to time or schedule, but in this expression it helps specify what kind of disco it is. Italian often builds noun phrases this way, where the main noun comes first and the specifying word comes after it.

So you should learn disco orario as one unit of vocabulary.

A simple pronunciation guide is:

eel DEE-sko o-RA-ryo EH-vee-ta la kon-tra-vven-TSYO-ne

A few useful notes:

• il sounds like eel
• disco has a hard c sound: DEE-sko
• orario has the stress on ra: o-RA-rio
• evita has the stress on vi: e-VI-ta
• zione is pronounced roughly tsyoh-neh

Also, in contravvenzione, the zz/zione area is not pronounced like English z. It is closer to tsy.

The plurals are:

• il disco orario → i dischi orari
• la contravvenzione → le contravvenzioni

Notice:

• disco becomes dischi to keep the hard k sound
• orario becomes orari
• contravvenzione becomes contravvenzioni

Yes, it is understandable and grammatically correct. However, depending on context, an Italian speaker might choose a slightly more natural or practical phrasing, such as:

• Il disco orario ti evita una contravvenzione.
• Usare il disco orario evita la contravvenzione.
• Il disco orario serve a evitare una contravvenzione.

Why? Because a parking disc does not literally avoid the fine by itself; rather, using it properly helps you avoid getting one. But your original sentence is still perfectly useful for learning grammar and vocabulary.