Nano-steels are a new generation of Advanced High Strength Steels, extremely suitable for lightweight automotive applications. The ferrite phase, which provides ductility and stretch, is significantly strengthened by nanometer-sized precipitates, which can increase the strength level by 30-50%. These steels contain different microalloying additions, such as vanadium (V) and molybdenum (Mo), which form the essential nano-precipitates. An efficient use of these additions requires further knowledge on the precipitation kinetics of the specific carbides and carbonitrides, and the interaction of these precipitates with the austenite to ferrite phase transformation. The work proposed here, which is part of a four-years project, aims to provide valuable quantitative data on the VC-precipitation kinetics in both austenite and ferrite and elucidate the effect of solute Mo and V additions.