What different of
"Ini mobilku"
"inilah mobilku"
"ini mobil punyaku"

Thanks

Question

What different of
 "Ini mobilku" 
 "inilah mobilku"
"ini mobil punyaku"

Thanks

Answer

Ini mobilku : This is my car.

Inilah mobilku : the -lah here just functions as some kind of emphasis, "This is MY car".
Like proudly showing it off to people.

Ini mobil punyaku: This car is mine. Pretty much the same as the first one.

Answer

The meaning all of them is "this is my car" 
It's talking about ownership
But Indonesia is one of country with so many different language and culture. 
So It's just about habit in speaking

Sorry my english not too good. Hopefully you understand what i mean

Answer

when you want to show off to someone or surprise someone you can use "-lah".
"Inilah anakku, yang kemarin juara,"
"inilah mobil baruku."

집에서 편안하게 언어를 배울 수 있는 기회를 놓치지 마세요. 경험 많은 강사진을 살펴보고 지금 바로 첫 수업을 신청하세요!