Fleet & business Car tax calculator Welcome to the Car Cost Calculator, created by Go Ultra Low to help UK businesses and company car drivers save money and cut their emissions. Our specially-developed interactive cost calculator will help you quickly and easily discover how much money you could save. You can input your current vehicle types, fuel consumption and mileage data to compare against real-world electric vehicle data. The results detail the potential in-life ownership cost savings for a range of plug-in vehicles, to help determine which type of electric vehicle could be best suited to your business requirements. This includes VED, BIK, fuel and congestion charge savings – so give it a go and see how much money you could save.