One of the most important ongoing cost when buying a car is Car insurance. In the UK you should allow for this cost when buying a car because it is a must and you are not allowed on the road without it. It can be expensive depending on the car you drive and depending on the individual. Being a driver in the UK myself, I have taken the factors in consideration and the way they calculate your car insurance are fairly standard worldwide and the cost will apply to you where ever you live.