How much does it cost to charge a tesla
You have some more firm facts to work from, so best to use that. Letâs use the Teslas figure at 500km, and a charge cost of $20, from easy figures to work with. Take a decently efficient petrol car that averages 5l/100km, it will require 25l of petrol to get the teslaâs 500km.esla Australia adds that it doesnât expect its users to be filling their batteries up from absolutely empty every single night, which means that the $20 estimate is a theoretical maximum cost. Most times, it will be cheaper than that.