FIELD: chemical or physical processes. SUBSTANCE: invention relates to methods (versions) of producing catalyst compositions used as three-route catalyzers for neutralizing automotive exhaust gases. First invention relates to a method of producing bimetallic palladium-rhodium catalysts, involving the step of applying complex salts on the substrate, drying the semi-product and subsequent annealing, wherein the step of applying complex salts is the application of double complex salts with formula [M1L1]x[M2L2]yXz, where M1 and M2 = Rh or Pd, L1 = ethylene diamine or ammonia, L2 = C2O42−, X = counter ions, x, y and z are stoichiometric coefficients. Second invention relates to a method of producing bimetallic palladium-rhodium catalysts, wherein the step of applying complex salts involves the following process steps: application of compound of type [M1L1]x Xy, where M1 = Rh or Pd, L1 = ethylene diamine or ammonia, X = counter ions, x and y—stoichiometric coefficients, drying in air at room temperature for 8–20 hours, then in drying cabinet in air at temperature 70–95 °C for 3–9 hours, application of compound of type Xy[M2 L2]x, where M2 = Rh or Pd, L2= C2O42−, X = counterions, x and y are stoichiometric coefficients. EFFECT: technical result consists in production of bimetallic palladium-rhodium catalysts with high catalytic activity with reduction of energy consumption and quantity of process solutions for recycling. 6 cl, 1 dwg, 9 ex.