The Porsche Panamera running cost picture depends most on fuel or charging use, tyres, insurance and the chosen variant price. The available running-cost clue is 2026 Panamera 2.9T: 9.5 L/100km; 2026 Panamera GTS 4.0T: 11.7 L/100km. Lower energy use helps in daily commuting, while a sensible purchase price keeps insurance and financing easier to manage over the ownership period.