1 Which is biggest car? The estate car. It’s got six seats. 2 Which is fastest car? The sports car. It can go at 220 km/ h. 3 Which is most expensive car? The estate car. It costs £ 22,000. 4 Which is the most reliable car? The hatchback. It’s got a four-star rating. 5 Which is safest car? The estate car. It’s got a five-star rating for safety.