The study revealed that in December 2007, the average car insurance premium was £497.26, compared to £472.52 in December 2006 (an increase of 5.24%).
The index reported significant differences in premium increases based on age in the last twelve months. Motorists aged between 40 and 50 saw an average rise of 7%, the highest of any age group, higher even than the under 25s at 6.59%. Those motorists aged 65 and over saw the lowest rise in premiums at 4.14%.
Joanne Mallon, Sainsbury’s car insur