The present disclosure relates to additive compositions and their use for improving the low temperature properties of motor fuels and fuels. The additive compositions include at least one modified alkylphenol-aldehyde resin and at least one filterability additive chosen from: the terpolymers of C4 to C22 alkyl (meth)acrylate, C20 to C24 alpha-olefin and maleimide N-substituted by a hydrocarbon chain having between 4 and 30 carbon atoms, the homopolymers of C1 to C40 alkyl (meth)acrylate, preferably the C8 to C24 alkyl polyacrylates, the ammonium salts of mono- or poly-carboxylic acid comprising at least one linear or branched, saturated or unsaturated hydrocarbon chain, having between 4 and 30 carbon atoms. The present disclosure also relates to compositions of motor fuels or liquid hydrocarbon fuels including such compositions.