القطار أسرع من السيارة.

In Arabic, the verb to be is usually not written or spoken in the present tense when you are making a simple statement.

So:

• القطار أسرع من السيارة literally looks like the train faster than the car but it means The train is faster than the car.

If you wanted a past-tense version, then Arabic would use a verb such as كان:

• كان القطار أسرع من السيارة = The train was faster than the car.

The sentence is a nominal sentence in Arabic. Its parts are:

• القطار = the train
• أسرع = faster
• من = than
• السيارة = the car

So the pattern is:

• noun + comparative adjective + من + noun

In this sentence:

• القطار = the thing being described
• أسرع = the comparative adjective
• من السيارة = what it is being compared to

So Arabic expresses it very directly: The train faster than the car.

Great question. أسرع is an elative form in Arabic. This form can mean either:

• more/-er → comparative: faster
• most/-est → superlative: fastest

The meaning depends on the context.

Here, because it is followed by من (than), it must be comparative:

• أسرع من = faster than

If you saw something like:

• القطار هو الأسرع = The train is the fastest

then it would be superlative.

So:

• أسرع من السيارة = faster than the car
• الأسرع = the fastest

من is the normal word used in Arabic to mean than after a comparative.

So:

• أسرع من = faster than
• أكبر من = bigger than
• أصغر من = smaller than

Examples:

• البيت أكبر من الشقة = The house is bigger than the apartment
• هذا الكتاب أفضل من ذاك = This book is better than that one

So in your sentence, من السيارة means than the car.

Yes. Because من is a preposition, the noun after it is grammatically in the genitive case.

So in full Classical/MSA case-marked form, you could write:

• القطارُ أسرعُ من السيارةِ

with:

• القطارُ = nominative
• أسرعُ = nominative
• السيارةِ = genitive after من

In normal everyday writing, these short vowel endings are usually omitted, so learners often just see:

• القطار أسرع من السيارة

But the underlying grammar is still there.

Not necessarily. الـ often means the, but Arabic uses it a bit more broadly than English.

Here, القطار and السيارة can mean:

• a specific train and a specific car, depending on context
• or the train and the car as known items in the situation
• or sometimes even a generic class in certain contexts

In a simple sentence like this, the most natural translation is usually:

• The train is faster than the car

But context decides whether it is truly specific or just the natural English way to express the comparison.

In a comparison like this, the elative form such as أسرع is typically used in the masculine singular default form, regardless of the noun being compared.

So Arabic says:

• السيارة أسرع من الحافلة = The car is faster than the bus
• القطارات أسرع من السيارات = Trains are faster than cars

Even though السيارة is feminine and القطارات is plural, the comparative adjective usually stays in the basic masculine singular form:

• أسرع
• أكبر
• أصغر
• أفضل

This is normal for the comparative use of the elative.

A careful pronunciation is:

al-qiṭāru asraʿu mina s-sayyārati

A few helpful notes:

• القطار = al-qiṭār
• أسرع = asraʿ
• من = min(a)
• السيارة is written with ال, but because س is a sun letter, the l sound of al- is assimilated, so it is pronounced more like as-sayyāra

So in normal pausal pronunciation, many learners will hear something close to:

al-qiṭār asraʿ min as-sayyāra

Also, the letter ع in أسرع is a consonant English does not have, so that word may take some practice.

In full formal grammar, the sentence would be:

القطارُ أسرعُ من السيارةِ

Here is why:

• القطارُ ends in -u because it is the subject/topic of the nominal sentence
• أسرعُ also ends in -u because it is the predicate
• السيارةِ ends in -i because it comes after the preposition من

However, in most modern printed Arabic outside of grammar books, textbooks for beginners, Qur'anic text, or highly formal material, these endings are usually not written.

So learners normally see:

القطار أسرع من السيارة

This order is the most straightforward and natural:

• القطار أسرع من السيارة

Arabic does allow some flexibility, but not every rearrangement sounds equally natural in beginner-level usage.

For a simple comparison, the standard pattern is:

• X + comparative + من + Y

So it is best to learn and use this pattern first.

If you want to change the focus, Arabic has other ways to do that, but for a learner, this sentence is the model to copy.

Not if you want to say faster than.

The ordinary adjective fast is:

• سريع

But for comparison, Arabic usually uses the elative form:

• سريع = fast
• أسرع = faster / fastest

So:

• القطار سريع = The train is fast
• القطار أسرع من السيارة = The train is faster than the car

You cannot normally replace أسرع with سريع and keep the same meaning.

By itself, it can do either. The sentence simply states a comparison:

• The train is faster than the car

Whether this is:

• a general truth
• a fact about transport in general
• or just true in one particular situation

depends on the context.

For example:

• In a general discussion of transportation, it may mean a general fact.
• In a story about getting to the airport, it may refer only to that particular trip.

So the grammar gives the comparison, while the context gives the exact scope.