A control system for an engine adjusts an engine torque based on an operation of an organ-type accelerator pedal for pivoting about a supporting point. The control system includes an accelerator opening acquiring module for acquiring an accelerator opening, a target acceleration setting module for setting a target acceleration of a vehicle based on the acquired acceleration opening, and an engine control module for adjusting the engine torque to achieve the set target acceleration. The target acceleration setting module sets the target acceleration corresponding to the acquired accelerator opening by using a predetermined range of the accelerator opening including a value at which the target acceleration becomes zero. The predetermined range is set such that a pedal reaction force F (N) applied from a predetermined position of the accelerator pedal when the accelerator opening is within the predetermined range is within a range of 2.5≦F≦26.