Charging your car with electricity instead of petrol or diesel is cheaper, so it depends on what type of vehicle you have and how much you charge it. For example, a battery-electric vehicle (BEV) doesn’t take fuel so you’ll save money.
A plug-in hybrid vehicle (PHEV) can save you money, but only if you minimise the car’s fuel use by charging your electric vehicle up regularly. However, with standard ranges of 20-40 miles, you’ll probably end up using some fuel.
A traditional hybrid (HEV) won’t save you any money on fuel as you can’t charge the car up.