Comparing a Ford Focus Electric ("FFE") with a Ford Focus conventional ("FFC"), an analysis goes like this. (Caveat: only applicable for California. Your mileage -- literally and figuratively -- may vary.)
Assume a conventional Ford Focus:
Assume a Ford Focus Electric
A few caveats are in order:
- This does not account for oil changes and other maintenance on the conventional Ford Focus
- This assumes charging is 100% efficient: 23 KW-h consumed from your electric company fully charges the FFE battery
- Gasoline prices (and electric prices) will stay relatively flat
- A conventional Ford Focus costs $20,000 to purchase and $0.14/mile to drive
- A Ford Focus Electric costs $30,000 (after rebates and credits) and costs $0.023/mile to drive
Doing the algebra, break-even happens at (30000 - 20000)/(0.14 - 0.023) miles or 85,235 miles.
Until you've driven 85K miles, the conventional Ford Focus costs less. At 85K miles, you will have spent the same amount for either car. After 85K miles, the Ford Focus Electric is significantly cheaper.