A vehicle anti-rollover system including at least one gas generator which discharges a gas flow sideways, to an atmosphere where the vehicle is rolling over under a rollover force of the vehicle, when the gas generator is activated or actuated during a vehicle rollover. A predetermined force of the gas flow produces a reactive force applied to the vehicle. The rollover force of the vehicle is directed sideways where the vehicle is rolling over, while the reactive force of the gas flow of the anti-rollover system is directed sideways in an opposite direction. Thus, the reactive force of the gas flow reduces the rollover force and minimizes the risk of a rollover crash or rolling over and serious vehicle occupant's injuries. In a vehicle unstable or rollover situation to avoid a vehicle rolling over, the system also allows the vehicle occupant to actuate the gas generator and to stabilize the vehicle almost instantly.