Buick Envision Avenir vs Mazda CX-90 PHEV Preferred — 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.Buick Envision Avenir: $87,352 net over 10 years ($4,416/yr running). Mazda CX-90 PHEV Preferred: $80,187 net over 10 years ($4,396/yr running). Estimates for Cedar Park, TX; every assumption is editable.