The recently found two-dimensional class of layered materials, MXenes, has attracted attention as potential anode materials in Lithium-ion batteries due to their high theoretical capacity, their long cycling stability as well as their high conductivity. Aiming to alter the electronic properties, we report on the effect of a 1% Mn-doping in V_(2)C MXenes, i.e. V_(2-x)Mn_(x)C. The distinct peaks in cyclic voltammetry measurements of V_(2-x)Mn_(x)C suggest that Mn-ions offer extra redox-active centers yielding an increase of the specific capacity compared to V_(2)C. Galvanostatic cycling with potential limitation studies show significantly larger reversible capacities of up to 339 mAh/g in V_(2-x)Mn_(x)C, at a current of 100 mA/g, which exceeds 256 mAh/g observed in pristine V_(2)C by more than 30%. We discuss this result with respect to the interlayer distances, sample morphology and charge transport properties. Overall, Mn-doping strongly affects and improves the electrochemical performance of V_(2)C MXenes.