BMW 7 Series 750e xDrive vs Porsche Taycan Base — Cost of OwnershipCompare any two cars on the true 5–10 year cost of ownership: purchase price, fuel or electricity, insurance, maintenance, registration, depreciation and resale value. EV vs gas, lease vs buy, with every assumption editable.BMW 7 Series 750e xDrive: $136,961 net over 10 years ($5,563/yr running). Porsche Taycan Base: $139,634 net over 10 years ($4,722/yr running). Estimates for Cedar Park, TX; every assumption is editable.