Control system for controlling at least one part of a vehicle includes sensor systems mounted on the vehicle, each providing a measurement of a state of the sensor system or a state of the mounting location of the sensor system and generating a signal representative of the measurement, and a pattern recognition system for receiving the signals and diagnosing the condition of the vehicle with respect to its stability based on the measurements of the sensor systems. The pattern recognition system generates a control signal for controlling the part(s) based on the diagnosed condition of the vehicle. The control signal is directed to each part to cause it to vary its operation, for example, to cause the part to attempt to correct for any instability of the vehicle. The controlled part may be a steering, braking or throttle system.