Sepeda motor saya perlu servis karena remnya kurang baik.

In Indonesian, possessors usually come after the noun.

• sepeda motor saya = my motorcycle
• literally: motorcycle my

This is the normal pattern:

• rumah saya = my house
• teman saya = my friend
• nama saya = my name

So saya sepeda motor would sound wrong in standard Indonesian.

Sepeda motor is the standard Indonesian term for motorcycle or motorbike.

It is made up of:

• sepeda = bicycle
• motor = motor

Together, sepeda motor means motorcycle.

In everyday speech, many Indonesians simply say motor:

• Motor saya perlu servis.

That is very common and natural in conversation.

Perlu means need or needs to.

So:

• perlu servis = needs servicing / needs a service

In this sentence, servis functions like a noun or an action word borrowed from English. Indonesian often allows this kind of compact expression.

You may also hear:

• perlu diservis = needs to be serviced
• harus diservis = has to be serviced

So perlu servis is natural and fairly concise.

Indonesian often does not use a word equivalent to English is / am / are in many sentences.

For example:

• Rumah saya besar. = My house is big.
• Dia guru. = He/She is a teacher.

So in your sentence, Indonesian does not need an extra verb like is before kurang baik.

Karena means because.

It introduces the reason:

• Sepeda motor saya perlu servis karena remnya kurang baik.
• My motorcycle needs servicing because its brakes are not very good.

It works much like English because.

You can also put the reason first:

• Karena remnya kurang baik, sepeda motor saya perlu servis.

That also means the same thing.

Remnya = rem + -nya

• rem = brake
• -nya can mean the, its, his/her, depending on context

So remnya here means something like:

• its brakes
• the brakes

In this sentence, the natural meaning is its brakes, referring to the motorcycle.

The suffix -nya is very common in Indonesian and can do several jobs. In this sentence, it most naturally marks possession or reference:

• remnya = its brake(s) / the brake(s)

This suffix can be used for:

1. possession
   • bukunya = his/her book, the book
2. definiteness/reference
   • orangnya = the person
3. sometimes to make something sound more specific or already known in context

So here, remnya points to the brakes belonging to that motorcycle.

Kurang baik literally means less good or not good enough.

It often sounds softer and more natural than tidak baik.

Compare:

• kurang baik = not very good / less than good / not in good condition
• tidak baik = not good

In mechanical contexts, kurang baik is very common because it suggests the condition is below standard, not necessarily completely bad.

So:

• remnya kurang baik = the brakes are not in good condition / the brakes aren’t very good

Indonesian nouns usually do not change form for singular vs. plural.

So rem can mean:

• brake
• brakes

Context tells you which one is meant.

In this sentence, English will usually translate it as brakes, because a motorcycle is understood as having a braking system, and English often refers to that in the plural.

If Indonesian wants to clearly mark plural, it can use reduplication:

• rem-rem

But that is not necessary here.

Because Indonesian does not have to mark plural when the meaning is already clear from context.

So:

• remnya kurang baik is completely natural

Using rem-remnya is possible in some contexts, but here it would sound less natural and more explicit than needed.

Indonesian often leaves number unmarked unless it really matters.

Yes. In everyday Indonesian, motor saya is extremely common and natural.

So these are both fine:

• Sepeda motor saya perlu servis.
• Motor saya perlu servis.

The full form sepeda motor is a bit more formal or explicit. In conversation, motor is often preferred.

Yes.

• sepeda motor saya = my motorcycle
• sepeda motorku = my motorcycle

Both are correct.

The difference is mostly style and tone:

• saya sounds a bit more neutral or formal
• -ku often sounds a bit more personal, direct, or casual in many contexts

So:

• Sepeda motor saya perlu servis.
• Sepeda motorku perlu servis.

Both are grammatical.

Yes. Servis is a common Indonesian borrowing, based on service.

In Indonesian spelling, it is usually written servis.

It is widely used for things like vehicles, machines, electronics, and maintenance:

• servis motor
• servis AC
• servis komputer

So in this sentence, perlu servis sounds very natural.

Yes, and that is also very natural.

Compare:

• Sepeda motor saya perlu servis.
• Sepeda motor saya perlu diservis.

Both mean roughly My motorcycle needs servicing.

The version with diservis makes the passive idea more explicit:

• diservis = be serviced

So perlu diservis is a little closer to English needs to be serviced.

Yes, in many everyday situations you could say:

• remnya kurang bagus

That would also mean the brakes are not very good.

However, baik often sounds slightly more suitable for condition, function, or performance, while bagus often emphasizes that something is good, nice, or well-made.

For a machine or part that is not functioning well, kurang baik sounds very natural.

The sentence follows a very common Indonesian pattern:

• Sepeda motor saya = subject
• perlu servis = predicate
• karena remnya kurang baik = reason clause

So structurally:

[Subject] + [needs servicing] + [because + reason]

This kind of order is very common and straightforward in Indonesian.