MPVs (multi-purpose vehicles) and MUVs (multi-utility vehicles) are designed to carry more passengers and cargo than regular cars. The main difference is that MPVs are usually built on a car-like platform and have a more car-like driving experience. MUVs are built on a truck-like platform with the handling of a large vehicle.
SUVs (sports utility vehicles) can be bigger than both MPVs and MUVs and they have a higher ground clearance. This makes them more suitable for driving on a wider variety of terrains. SUVs also carry more passengers and cargo than regular cars but tend to have less carrying capacity than MPVs and MUVs.