Generally, 2-seater cars or coupes are more expensive to insure compared to minivans, crossovers, SUVs, pickup trucks, and sedans. This may be due to most coupe drivers being younger and less experienced.
Minivans and SUVs are usually driven by parents with kids, so insurance companies view those vehicles as less risky. Coupes also may have lower safety ratings compared to larger vehicles.
However, coupes are usually cheaper to insure than sports, luxury, and electric or hybrid cars.