The object of this paper is to look at some of the practical problems which have to be faced in an analysis of motor insurance statistics and to point towards some of the solutions. In order to cover the ground, it has not been possible to examine any of the issues in any great depth and only private car insurance is considered. Much of the theoretical background to the subject has already been very ably put to this Society—in particular in papers by R. E. Beard and P. D. Johnson—with the result that a certain element of repetition has been inevitable, but this paper is in no way intended to be a complete theoretical treatise. The intention has been to consider various problems, discuss some actual statistics and their implications and then to continue. It is hoped that this may lead to a better understanding of the practical issues involved and at the same time may encourage others to delve into a quite entrancing subject which offers considerable scope for useful research.