Hi,

We have a 2006 Mitsubishi Grandis. It is a seven seater car. It is regarded as a station wagon, not an SUV. We bought it second hand 2 months before our third child arrived.
And we could definitely fit another child in there

I suggest you do a web search on the Grandis. I had never even heard of them until I started researching vehicles while pregnant with #3.

The other option would be a Honda Odyssey. They are a 7 seater. It is a wagon also not an SUV.

I am happy to answer any questions if you have them. Good luck!