Hydrogen-fueled　Wankel　rotary　engine　has　attracted　widespread　interest　due　to　its　high　power　and　eco-friendly　emissions.　To　further　promote　its　development,　the　present　work　investigates　the　comprehensive　performance　of　hydrogen-fueled　Wankel　rotary　engines　by　experimental　and　data-driven　methods.　The　main　conclusions　are　as　follows:　Within　the　test　range　(1000–3000　r/min　and　1.0　to　3.0　excess　air　ratio)　qualitative　control　hydrogen-fueled　Wankel　rotary　engine　achieve　maximum　torque　and　brake　thermal　efficiency　of　117.4　N　m　and　36.2　%　at　3000　r/min,　respectively.　And　the　best　brake　thermal　efficiency　at　each　engine　speed　usually　corresponds　to　1.8　excess　air　ratio.　In　particular,　comparing　this　work　to　previous　work,　hydrogen-fueled　Wankel　rotary　engines　and　piston　engines　have　different　efficiency　characteristics.　In　addition,　qualitative　control　can　effectively　inhibit　the　NO　emission　and　knock.　NO　emission　can　be　negligible　for　each　engine　speed　when　excess　air　ratios　exceed　2.　In　particular,　based　on　the　3–20　kHz　band-pass　filter,　0.1　bar　knock　intensity　can　be　considered　as　the　knock　occurrence　threshold　in　the　hydrogen-fueled　Wankel　rotary　engine.　There　is　a　close　correlation　between　the　knock　according　to　that　threshold　determination　and　NO　emission,　which　can　be　used　to　simply　the　prediction　model　and　facilitate　the　supervision　of　the　electronic　control　unit.　Among　various　Machine　Learning　methods,　support　vector　machine　with　radial　basis　function　kernel　function　has　the　best　global　prediction　ability　of　torque,　efficiency,　NO　emission　and　knock　level.　©　2025　Elsevier　Ltd