Comprehensive car insurance cover has been driven up by 12.3 per cent, or around £92, in the space of a year, taking the typical premium to £843.
Third party, fire and theft customers fared even worse, suffering an annual 19.9 per cent rise, equating to an increase of £192 over 12 months.
The biggest annual price hikes for comprehensive cover were in the North of England, according to the Confused.com/Towers Watson Car Insurance Price Index data, which uses more than four million quotes.
Bradford suffered a 27.5 per cent year-on-year rise in the cost of average comprehensive cover, taking premiums to around £1,394.
Oldham fared even worse with a 27.9 per cent year-on-year increase to an average premium of £1,437.
Scotland saw the lowest annual premium rises in the UK for comprehensive cover, with cover in Perth up just 0.3 per cent on the year to an average £564. Kirkwall had a 0.8 per cent rise to reach £620.
But despite the year-on-year hikes, the average price of a comprehensive car insurance policy fell by 1.6 per cent during the third quarter of 2011 – the first quarterly decrease for more than three years.