Tayar ajiya tana cikin mota.

Yes:

• tayar ajiya = spare tire
• tana = it is / a present-state marker for a feminine singular subject
• cikin = inside / in
• mota = car

A very literal gloss would be something like:

spare-tire it-is inside car

So the normal English meaning is The spare tire is in the car.

Because taya changes to tayar when it is linked to another noun.

In Hausa, when one noun is followed by another noun that defines it, the first noun often takes a linking form or construct form. For many feminine nouns ending in -a, this shows up as -r.

So:

• taya = tire
• tayar ajiya = tire of reserve/storage = spare tire

That -r is not random; it helps connect the two nouns.

Because Hausa often builds this kind of idea as noun + noun, rather than adjective + noun like English often does.

So instead of saying something exactly like spare tire with spare before tire, Hausa says something more like:

tire of reserve/storage

That is why ajiya comes after tayar.

By itself, ajiya usually means something like storage, reserve, or keeping something aside.

So in tayar ajiya, it gives the idea of a tire kept in reserve, which is why the whole phrase means spare tire.

The role of is is mainly being handled by tana.

In Hausa, present-time location or state sentences often use a subject form like:

• yana for masculine singular
• tana for feminine singular
• suna for plural

So in this sentence, tana is the part that makes the spare tire is ... work.

It is not a perfect one-to-one equivalent of English is, but in this kind of sentence it does much of that job.

Because Hausa uses grammatical gender, not just biological sex.

The noun taya is grammatically feminine, so it takes the feminine singular agreement form tana.

That does not mean the tire is literally female. It just means the noun belongs to the feminine class in Hausa grammar.

So:

• taya = feminine noun
• therefore tana is used

Cikin means inside or in the inside of.

It is more specific than a very general location word. In this sentence, cikin mota clearly means inside the car.

You can think of it as emphasizing that the spare tire is physically within the car, not just near it.

Sometimes yes, depending on context, but the meaning is a little less specific.

• a mota can often mean in the car or at/on the car, depending on context
• cikin mota clearly means inside the car

So if you want to be very clear that something is physically inside the car, cikin mota is the better choice.

Because Hausa does not usually use articles in the same way English does.

English needs words like:

• a
• the

Hausa often leaves that idea to context instead.

So mota can mean a car or the car, depending on the situation. In this sentence, English naturally translates it as the car, but Hausa does not need a separate word for the.

A natural plural version would be:

Tayoyin ajiya suna cikin mota.

Here the changes are:

• taya → tayoyi / tayoyin in the linked plural form
• tana → suna for a plural subject

So:

• tayar ajiya tana cikin mota = The spare tire is in the car
• tayoyin ajiya suna cikin mota = The spare tires are in the car