An adjustment device for adjusting an air influencing element of a motor vehicle between at least a first position and a second position, comprising a driving unit for adjusting the air influencing element between at least the first position and the second position provided with an input shaft and an output shaft which is at a distance from an axis of the input shaft, wherein the driving unit has a first part which is provided around the input shaft of the driving unit, and has a second part, wherein the adjustment device is furthermore provided with a failsafe mechanism, wherein the failsafe mechanism engages the first part of the driving unit, wherein the failsafe mechanism comprises an auxiliary driving motor, separately from a main driving motor of the driving unit, wherein the auxiliary driving motor is configured for driving the failsafe mechanism, and wherein the auxiliary driving motor is not configured for driving the output shaft.