How can our car insurance renewal go up by a shocking 180%?

Range Rovers are among the most stolen makes, pushing up premiums. Photograph: Dewberry Firkin/Alamy

I had been reading about the rising cost of car insurance but I was still shocked when our renewal quote for this year arrived from Aviva, which had shot up from £893 to £2,531. An increase of more than 180%.

I can’t understand why. We have four years’ no-claims discount and do 6,000 miles a year (we only really use the car to visit the grandparents with our children).