The study of dynamical performance and effectiveness of new proposed system of vibration dampers for any type of propulsion (Electric Motor Cars, Hybrid Vehicles and Petrol Engine Automobiles) is presented. Design and structure of proposed system is based on George Nerubenko US Patents 7,438,165 and 7,464,800 having the control system with self-tuning contour adjusted for all operational frequencies in running propulsion. The proposed system of vibration damper configurations having the simplest mechanical variable damping devices is observed. The proposed system of vibration dampers consists of combination of patented Bending / Torsional Vibration Dampers and Flywheels. The developed schemes would be applied for a design of all kinds of powertrains, transmissions, and drivelines successfully replacing the conventional vibration reduction tools. A description and structural details of new proposed system of vibration dampers with the control system equipped by instantaneous frequencies tuners and variable damping devices are shown. Mathematical models for implementation of proposed system in Petrol Engine Automobiles, Hybrid Vehicles, and Electric Motor Cars is introduced. The models based on the systems of ordinary differential equations describing the rotation and vibration phenomena of mechanical components combined to equations reflecting the contact conditions in different elements of propulsion have been used for the analysis of the dynamic behavior of proposed system. The key analysis is presented for self-tuning version of Tuned Bending/Torsional Vibration Dampers and Flywheels equipped with variable damping device. Linearized solutions are presented in graphical forms allowing to concentrate the main attention on reduction of the variations of instantaneous value of rotational speed (angular velocity) forcing the elimination of a coefficient of fluctuation of rotational speed and on the reduction of bending and torsional vibrations of propulsion. Tests have been conducted to prove a proposed conception. Test results obtained from experiments and mathematical simulations illustrate the effectiveness of new proposed system of vibration dampers. The proposed concept is successfully applicable in all types of automobiles: Internal Combustion Engine Cars, Hybrid Vehicles, and Electric Motor Cars substantially reducing the vibration problems and radically increasing their performance.