Here are some specs, I found from the web from a friend from Japan. The link is here.
≪4dr≫
4389mm in length
1650mm in width
1400mm in height
Weight F560kg R525kg
All up weight F660kg R700kg
≪3dr≫
4389mm in length
1650mm in width
1365mm in height
Weight F560kg R540kg
All up weight F660kg R715kg
All along I thought the 3dr carina is lighter than the 4dr. Guess I'm wrong. It looks shorter than the 4dr, but its actually same. hehehe...