But it is already expensive enough that it doesn't make a lot of sense to buy if you want to buy one to save money on gas. The price difference is $15350. If we assume $4/gal for gas, then that's 3837.5 gallons. Fiat 500 gas version gets 31mpg city, 40mpg highway. If we average that, then we get 136,231.25 miles before the price difference pays for itself. And that's assuming we paid cash for the car. If you finance it, then add interest on top of that.
The Gasoline price difference is only a part of the cost savings, and it isn't even the majority. The fact is that pure electric vehicles are much cheaper to maintain. They have no oil, so you can scratch off $200 / year in oil changes. There is no rotating alternator, no starter, of fuel pump, no oil pump, no water pump, No distributor cap. The single biggest difference is a lack of wear and tear on the brake pads. A *properly* built EV will have full regenerative braking which effectively prevents the driver from *ever* using the brake pads. (most EVs today do not have full regen braking, and instead use the brake pads part of the time. This is a result of incompetent design engineers who still do not understand electronics, and insist on a mechanical solution). A typical EV will go 5 years between maintenance visits. I have had mine for two, and the dealership offers "free oil changes for life" on all of their vehicles, So i take it to them once every three months, and they top the windshield wiper fluid and wash the car. Outside of that, there has been no maintenance at all since I bought the car, and the first sched maintenance (according to the factory) isn't until 100k miles when they will check the control diagnostics to see if everything has been running correctly. I get the brake pads every year at the cars inspection, and every year they comment that the brake pads look essentially brand new. They don't expect I will need new brake pads until somewhere well north of 100k miles.
At the end of the day, the cost for the first 5 years are a little cheaper for the gasoline car. You have $250/ month for car payments, plus $80-100ish for gas, plus $40-50/ month for maintenance (oil, brakes, etc.
The comparable EV will cost about $500 / month in payments, plus $25 / month in additional electric costs.
Total Gas: $370-$400 / month. Total Electric: $525-$530/month
After 5 years, the cost dynamic changes radically. The two car payments go to 0. The operating costs for the EV remain around the $25 / month in electric costs. The monthly cost for the gas vehicle actually go up. You still have $80-$100, and you still have the $40-$50 for regular maintenance, but now things start to break. You have an additional $100 / month for unexpected maintenance, (maybe twice a year, something like an alternator goes, costing $600, maybe you accidentally fry a brake rotor, so that $100 brake job now costs $500.
5 years to 10 years old: Gas car: $220 - $230 / month. EV: $25 / month
After 10 years, it gets truly ugly. The gas can now has major mechanical trouble on a regular basis. The total average monthly maintenance costs are up over $250 / month, and most people consider it cheaper to replace the vehicle. The EV on the other hand is still in perfect working order, and there is no particular reason it should have significant costs this decade. The only two parts to suffer any real wear and tear are the motor controller, and the motor itself, both of which if designed properly, for the EVs usage profile, should last many decades. The motor controller will eventually fail due to a phenomenon known as silicon fingers, but in large quantities motor controllers would be very cheap to build. ($300 or less, and it should be at least 2 decades before it fails.)