 Mandžukić akabva awedzera zvimwe zvibodzwa zvina mumimwe mitambo mishanu yeBundesliga, achitora zvibodzwa zvake kusvika pazvipfumbamwe mumitambo gumi nerimwe muchikamu chepamusoro cheGerman. Mushure mekupera kwechando kweBundesliga, Mandžukić akaenderera mberi nebasa rake rekukora zvibodzwa, achiwana zvimwe zvibodzwa zvitatu mumitambo miviri yekutanga, vachipesana neGreuther Fürth neStuttgart. Akapinza imwe brace kurwisa 1. FSV Mainz 05. Akapedza mwaka wake wekutanga weBundesliga neBayern semutambi wepamusoro wechikwata, achiwana zvibodzwa gumi neshanu mumitambo makumi maviri nemana uye aine simba rakakura mukukunda mukombe weBundesliga. Akahwina chibodzwa chake chekutanga cheChampions League mumwaka uyu mumutambo weRound of 16 neArsenal. Akawana imwe imwe mumutambo wequarter-fainari vachipesana neJuventus muTurin, achipa Bayern 0 1 kunze. Musi waMay 25, Bayern yakatarisana neBorussia Dortmund mu2013 UEFA Champions League Finaluye Mandžukić akarova chinangwa chekutanga chemutambo, achipa Bayern 10 inotungamira muminiti ye60th. Bayern yakaenderera mberi kuhwina mutambo 21 mushure mechinangwa chekupedzisira kubva kuna Arjen Robben. Nechinangwa ichi, Mandžukić akava muCroat wokutanga kunwisa mumutambo wokupedzisira weChampions League uye akabudirira zvikuru mwaka wokutanga kwaari muMunich, sezvo kirabhu yakapedza mwaka wekukunda katatu, ichiti Bundesliga, Champions League, uye DFB-Pokal, pamwe neGerman Supercup pakutanga kwemushandirapamwe. 