Insurance companies are making up the prices these days. My Mk3 Gti 8v is only £15 a YEAR cheaper than my Leon Cupra (500 per year fully comp 7 year no claims). They (Admiral) had my golf down as a 16v so phoned up to correct it and they said both the 16 and the 8v were the same price to insure, Any changes I suggested to bring the cost down came back the exact same price. My renewal is due soon anyway and expect a hike so will just change companies.