I am planning to buy a Baby/Child car seat for my 3 month old daughter.
Please provide your sugegstions.
Have been thru the same process, and I have just one suggestion. Don't buy it now!!
Let me tell you why ... at three months of age, what you will need is an infant seat. That is normally usable up to the age of 6 months only. This is typically for use for a baby who is not able to sit up on his/her own, and is of particular use to mothers (and yes, sometimes fathers) who have to travel in a car alone with the baby. Typically, these seats are capable of being fitted on the front seat (rearward facing).
In most Indian contexts, the number of times that a single parent will be travelling with a 3~6 month old baby is very very low. If this is the specific case that you have, then by all means go ahead and buy the seat.
My suggestion is that you wait till the baby is six months old, and is sitting up on her own. You can then buy a seat which is usable from 6~18 months, and with a stretch, even some more time.
The advantage with such a seat is that it will have a longer life, and also, the increased height would mean that the baby can see out of the window too, and they like that.
Till such time, it is best that one parent (or anyone!!) sits with the baby in the back seat, where it will be safest.
Re manufacturers, I am sure there are many, but the fact is that the good ones are still the ones that are imported, I used seats from a company called snugseats. A visit to a Shopper's Stop or any decent store can give you some choice. If of course you have someone coming from abroad, you can get them to bring you one, since the choices are much larger abroad.