Mazda CX-50 2.5 Turbo vs Mini Cooper S Signature Convertible — 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.Mazda CX-50 2.5 Turbo: $73,086 net over 10 years ($4,226/yr running). Mini Cooper S Signature Convertible: $71,122 net over 10 years ($3,956/yr running). Estimates for Cedar Park, TX; every assumption is editable.