Gari hili linahitaji kukaguliwa kabla ya safari.

Because gari belongs to noun class 5 in Swahili, and words that go with it have to agree with that class.

• gari = car
• hili = this, for class 5 nouns

So gari hili means this car.

If it were plural, it would change to:

• magari haya = these cars

Swahili agreement like this is one of the biggest differences from English.

In normal Swahili word order, demonstratives usually come after the noun they describe.

So:

• gari hili = this car
• not normally hili gari

This is the standard pattern learners should use:

• noun + demonstrative
• noun + adjective
• noun + possessive

For example:

• mtu huyu = this person
• kitabu hiki = this book

Linahitaji can be broken into three parts:

• li- = subject marker for a class 5 singular noun like gari
• -na- = present tense marker
• -hitaji = need

So linahitaji literally means something like:

• it is needing
• more naturally in English: it needs

In this sentence, the it refers to gari.

Because Swahili often puts the subject directly into the verb through a subject marker.

Here, li- already tells you the subject is a class 5 singular noun, which matches gari.

So Swahili does not need a separate standalone word for it the way English usually does.

English:

• It needs

Swahili:

• linahitaji

The subject agreement is built into the verb.

Ku- is the marker for the infinitive, like English to in to check or to inspect.

The base verb is:

• -kagua = inspect, examine, check

The form kukaguliwa means:

• to be inspected
• to be checked

So:

• linahitaji kukaguliwa = it needs to be inspected

The important idea is that the car is receiving the action, not doing it.

Because the car is the thing being checked.

• kukaguliwa = to be checked / to be inspected

If you used the active idea instead, it would suggest that the car is doing the checking, which does not make sense here.

So the passive is the natural choice when you mean:

• someone should inspect the car
• the car needs inspection

A very natural alternative would also be:

• Gari hili linahitaji ukaguzi kabla ya safari.
• This car needs an inspection before the trip.

Kabla ya means before.

In Swahili, kabla is commonly followed by ya when introducing what comes after it.

So:

• kabla ya safari = before the journey / before the trip

You should learn kabla ya as a very common expression.

Examples:

• kabla ya kazi = before work
• kabla ya chakula = before food / before the meal
• kabla ya kusafiri = before traveling

Not exactly.

In Swahili, safari usually means:

• journey
• trip
• travel

It is a broad everyday word. English borrowed safari from Swahili, but in English it often has a narrower meaning, especially a wildlife trip.

So in this sentence, safari just means something like:

• trip
• journey

not specifically an animal-viewing expedition.

It can match either one, depending on context.

With a vehicle, both are reasonable:

• checked sounds a little more everyday
• inspected sounds a little more formal or thorough

So this sentence could be understood as:

• The car needs to be checked before the trip.
• The car needs to be inspected before the journey.

Both capture the idea well.

It would become:

• Magari haya yanahitaji kukaguliwa kabla ya safari.

Here are the changes:

• gari → magari = car → cars
• hili → haya = this → these
• li- → ya- in yanahitaji to match the plural noun class

So the singular/plural contrast is:

• Gari hili linahitaji kukaguliwa... = This car needs to be inspected...
• Magari haya yanahitaji kukaguliwa... = These cars need to be inspected...

Yes, it is very natural.

The structure is:

• Gari hili = subject noun phrase
• linahitaji = main verb
• kukaguliwa = infinitive complement
• kabla ya safari = time phrase

So the sentence flows as:

• This car
  • needs
    • to be inspected
      • before the trip

That is a very normal and straightforward Swahili sentence pattern.