it really depends on the insurer but ive found its upto 25% extra depending on all the other crap associated with insurance,
for examply my 1.2 dynamique, valued £5k, mileage 10,000ish, ages 20 i years experence fulltime emplyed, garaged, no points and an unsettled claim, fully comp cheapest i could get £1306 all in. pay monthly £1652,
but my dad is a completly different story.
he has a £2k 1.6 laguna sport, same post coded, full time employed, on the drive, age 50, 20,000 a year. fully comp from the same company £273 all in, pay montly £278.