Black box quotes were coming in between £50 to £150 cheaper annually. Perhaps in some extreme cases £200. On a 1.5k quote this was. We decided against it after I read a lot of the terms on them. They are deliberately completely open to the insurance companies to abuse.We were talking about car insurance with our two interns the other day. I was amazed to hear that they had both had their insurance cancelled due to being caught speeding with a black box fitted. I have no idea how common that is but its worth considering. I mean, at 17 I was a good kid but I still thought I was Colic McRae the second I passed my test.