If you're having your first child, you don't need to jump in and get a massive, seven-seater SUV, especially if you're only planning to have one child. A five-seater car will typically be large enough for a small family and should give you ample space for your child to sit comfortably.  Of course, if you need a larger capacity, or see yourself transporting lots of people regularly, then a seven-seater car may be a better option. Just be aware that some rear seats may only be large enough for small children, and teenagers can start to get cramped right at the back with some models.  That means if you're looking for a large family car to last a long time, get one that provides enough space for fully grown children.