Given that your monthly running is quite high, we would recommend you consider an electric car. Most EVs on the market today will easily offer a range sufficient to cover your 100 km a day, and over the course of time, you will definitely save a lot in fuel bills. However, it is very important to note that you must have access to your own charging at home or your place of work. Relying on public chargers will be difficult, given that you will have to find one vacant and working and then spend your time there.