There is an important clarification about fast charging and battery health. Constant DC charging does not automatically mean the battery will necessarily fail earlier. Different studies do not produce identical results.
In its January 2026 analysis, Geotab associates frequent DC charging above 100 kW with faster capacity loss: up to around 3% annually versus approximately 1.5% with mainly AC or lower-power charging. This is an observation across different makes and models, not a prediction for a particular Tesla. Geotab
In a June 2024 study of 13,000 Teslas, Recurrent found no statistically significant difference in range degradation between frequently and infrequently fast-charged cars. The company notes that an effect could emerge later in the battery’s life. Neither “DC always ruins the battery” nor “DC never matters” is therefore an accurate universal answer. Recurrent
For running costs, the actual charging price matters most. For example, assuming 20 kWh of billed energy per 100 km at €0.50/kWh gives €10/100 km. Assuming 10 litres of LPG per 100 km at €0.70/litre gives €7/100 km. These are illustrative assumptions, not current tariffs. Add any idle fees, parking charges or subscriptions as well.
There is also an important detail about the calculator: when checked on 7 October 2026, the AC/DC slider on /sravni changed charging time, while the price remained based on the actual project log. For a “public charging only” scenario, do not automatically assume that the logged energy cost will be the same. USATeslata
Electric cars are exempt from annual vehicle tax according to the Bulgarian National Revenue Agency’s published information. Check the individual municipality’s rules separately for free parking. nra.bg
Less servicing also does not mean no servicing. Tesla specifies maintenance checks and consumables that should be included in the overall calculation. Tesla
Sources: Geotab: 2026 battery-health analysis · Recurrent: fast charging across 13,000 Teslas · Bulgarian National Revenue Agency: vehicle tax and exemptions · Tesla: Model Y maintenance · Project comparison calculator
