A vehicle control apparatus comprising a navigation system and a control unit, wherein the navigation system includes a map database, a position acquisition unit, a route determination unit, and an output unit configured to output road information on a plurality of locations from a position of the vehicle to a location at a predetermined distance ahead on the target route, wherein the control unit includes a buffer unit configured to store the road information as the road information on a first distance interval, and a controller unit configured to control the speed of the vehicle, wherein the output unit is configured to, in response to changing the target route, thin out the road information such that the number of data becomes less than that of the road information on the first distance interval, and wherein the buffer unit is configured to store the thinned-out road information.