Hello. I've owned my Tesla Model 3 for 15 days now. I've driven 1,562 miles from November 16-November 30.
With public charging and Superchargers, I have spent $28.84 and have driven 1555 miles (it came with 7 miles on it). That works out to $0.0186 per mile. I do not have charging ability at my condominium.
By comparison, the Lexus IS 250 AWD I traded in. I drove 1,361 miles from November 1-14, spending $181.00 in gas. That works out to $0.1351 per mile.
Even in the worse case scenario ... Only supercharging in Massachusetts, I would have spent $.24 x 451 kwh = 110.21 which is $.07087 per mile.
This is excluding oil changes.
With the proper planning of utilizing public charging an sporadic supercharging, you will definitely save some money in your monthly budgeting, even if your Tesla payment is a little bit more.
BTW the 1562 miles are at 284 what/mi in cold Massachusetts, which makes sense to me.