Under　the　background　of　carbon　neutral,　hydrogen-fueled　Wankel　rotary　engine　(WRE)　with　high　power　density　and　compact　layout　has　the　potential　to　become　a　substitute　for　current　fossil　engines.　Ammonia　as　a　carbon-free　renewable　energy　is　considered　alter-native　energy　used　in　vehicles,　however,　its　application　on　WRE　is　lacking.　Therefore,　the　present　work　aims　to　investigate　the　performance　of　ammonia-enriched　hydrogen-fueled　WRE　to　analyze　the　feasibility　of　ammonia　applied　in　hydrogen-fueled　WRE.　The　main　conclusions　are　as　follows:　Under　test　conditions,　the　maximum　brake　torque　and　thermal　efficiency　are　obtained　at　about　30%　and　40%　volume　fraction　of　ammonia　in　fuel,　and　compared　with　pure　hydrogen　conditions,　achieving　relative　improvements　of　21%　and　29%,　respectively.　Slightly　rich　combustion　is　recommended　to　increase　power　and　decrease　NO　emissions　with　an　acceptable　economic　loss.　In　addition,　ammonia　enrich-ment　can　prevent　the　occurrence　of　abnormal　combustion.(c)　2023　Hydrogen　Energy　Publications　LLC.　Published　by　Elsevier　Ltd.　All　rights　reserved.