A driving device (1B) of a metering and mixing apparatus (1A) for multi-component substances, in particular multi-component adhesives, which driving device has at least two cartridge holders (2, 3) for holding interchangeable cartridges (2.1, 3.1) with individual substance components, a discharging apparatus for simultaneously discharging the substance components from the cartridges (2.1, 3.1) through component outlets with the aid of discharging pistons (11, 16) entering the cartridge holder (2.1, 3.1) or cartridges (2.1, 3.1), and a mixing apparatus (7) which is connected to the component outlets, mixes the discharged substance components and discharges the latter in mixed form, with a gearing unit (8) for the connection of an, in particular electric, drive motor (9), wherein the gearing unit (8) has detection means (12) for detecting at least one counterpressure which builds up during the discharging of at least one of the substance components, and control means (12, 14) which are connected on the inlet side to the detection means and are intended for bringing about a driving control function in response to a detection result.
