4-wheel mobility scooters have two front wheels and two rear wheels. This design gives them extra stability over a variety of surfaces. Some 4-wheel mobility scooters have a hybrid design that places the front wheels close together giving users a good mix of stability and maneuverability. Whatever the design, 4-wheel scooters are more difficult to use indoors compared to 3-wheel scooters because of their larger turning radii. 4-wheel mobility scooters from all manufacturers are listed here.