The Porsche 718 running cost picture depends most on fuel or charging use, tyres, insurance and the chosen variant price. The available running-cost clue is 2025 Cayman 2.0T: 8.6 L/100km; 2025 Boxster 2.0T: 8.6 L/100km; 2025 Cayman GT4 RS 4.0L: 12.7 L/100km; 2025 Spyder RS 4.0T: 12.9 L/100km; 2025 Boxster GTS 4.0L: 9.7 L/100km; 5 more variants. Lower energy use helps in daily commuting, while a sensible purchase price keeps insurance and financing easier to manage over the ownership period.