The BMW 5 Series running cost picture depends most on fuel or charging use, tyres, insurance and the chosen variant price. The available running-cost clue is 2025 530i M Sport: 7.1 L/100km; 2025 520i M Sport: 5.8 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.