استفسرت عن المقدم والتقسيط.

A careful pronunciation would be:

istafsart ʿan il-muʔaddam w-it-taʔsīṭ

A more learner-friendly breakdown:

• استفسرت = is-taf-sart
• عن = ʿan
• المقدم = il-muʔaddam
• والتقسيط = wit-taʔsīṭ or w-il-taʔsīṭ, depending on speed and style

A few pronunciation notes:

• ع in عن is the Arabic letter ʿayn, which has no exact English equivalent.
• ق in التقسيط is often pronounced as a glottal stop ʔ in Egyptian Arabic, so taʔsīṭ is very common.
• In Egyptian speech, الـ often sounds like il- rather than al-.

استفسرت means I inquired, I asked for information, or I checked about.

It is understandable in Egyptian Arabic, but it sounds a bit formal or official. In everyday Egyptian speech, many people would more naturally say:

• سألت عن المقدم والتقسيط
• كنت بسأل عن المقدم والتقسيط

Those mean I asked about the down payment and installment plan.

So:

• استفسرت = correct, a bit formal
• سألت = more common in daily conversation

The -ت shows that the speaker is I in the past tense.

So:

• استفسرت = I inquired
• استفسر = he inquired
• استفسرتَ = you masculine inquired
• استفسرتِ = you feminine inquired

In normal written Arabic without full vowels, استفسرت can represent more than one form, but from context it often means I inquired.

Because استفسر عن is the normal pattern for to inquire about.

So the structure is:

• استفسرت عن... = I inquired about...

This is similar to English, where inquire often goes with about.

Examples:

• استفسرت عن السعر = I asked about the price
• استفسرت عن الشقة = I asked about the apartment

So عن is not optional here if you want to say about.

Here, المقدم most likely means the down payment.

That is a very common meaning in financial or buying contexts, especially when talking about property, cars, or payment plans.

Be careful: مقدم can have other meanings in other contexts, such as:

• presenter / host
• front / beginning
• certain titles or ranks

But with التقسيط right after it, the meaning is very clearly down payment.

التقسيط means paying in installments or an installment plan.

So in this sentence, it refers to financing or splitting the total price into multiple payments.

For example:

• الدفع بالتقسيط = payment in installments
• عايز أدفع بالتقسيط = I want to pay in installments

In everyday Egyptian Arabic, this is a very common word in shopping, real estate, and car sales.

Because they are being treated as definite nouns:

• المقدم = the down payment
• التقسيط = the installment plan / installment payment

In English, we do not always say the in the same places Arabic does. Arabic often uses the definite article when referring to a known or expected concept in a situation.

For example, if you are talking to a seller or real-estate agent, المقدم and التقسيط naturally mean:

• the down payment
• the installment terms

even if English might sometimes say simply down payment and installments.

In Arabic, و meaning and is normally attached directly to the next word.

So:

• و + التقسيط becomes والتقسيط

This is completely standard in Arabic writing.

The same thing happens in many other examples:

• والبيت = and the house
• والسعر = and the price
• والعقد = and the contract

It sits somewhere close to both, but استفسرت feels more formal, so the whole sentence sounds more like formal Arabic or formal spoken Egyptian.

A more everyday Egyptian version would often be:

• سألت عن المقدم والتقسيط
• كنت بسأل عن المقدم والتقسيط

So you could think of it like this:

• استفسرت عن المقدم والتقسيط = correct, formal/polite
• سألت عن المقدم والتقسيط = more casual and common in conversation

Yes, you can.

Both are correct:

• استفسرت عن المقدم والتقسيط
• استفسرت عن المقدم وعن التقسيط

The version with one عن is more compact and very natural, because one preposition can cover both nouns.

Repeating عن can add a little emphasis or make the two items feel more separate:

• about the down payment and about the installment plan

But in normal speech, the shorter version is usually enough.

In everyday Egyptian speech, many people would say something closer to:

• سألت عن المُقَدَّم والتقسيط
• كنت بسأل عن المُقَدَّم والتقسيط

And the pronunciation might sound like:

• saʔalt ʿan il-muʔaddam wit-taʔsīṭ
• kont basʔal ʿan il-muʔaddam wit-taʔsīṭ

So if your goal is sounding natural in Egypt, learning سألت عن... is very useful, even though استفسرت عن... is perfectly understandable.