Satellite Navigation Systems or Sat Navs are extremely useful especially if you are doing a lot of driving. There are many different types out there ranging from £80 up to approximately £1000. Depending on how much you are going to use your Sat Nav and what you need it for will decide on what model you require. Many new cars and some older models come with a built in navigation system, which can be extremely useful. You need not worry about charging it and don’t have to take it in and out of the car with you. Although these types of systems are great, the drawback is if they break they are often very expensive to repair. Some Sat Navs offer traffic reports, which will also change your route according to the amount of traffic on the road. Others will show you where petrol stations are, food places and points of interest, making planning a route very easy.