Third-party premium for cars with engine capacity not exceeding 1000cc, such as the Maruti Suzuki Alto, Datsun redi-GO and Renault Kwid, costs Rs 1,850 currently. So paying a three year premium in one go will cost you around Rs 5,550 -- Rs 3700 extra. As for cars with engine capacity ranging between 1000cc to 1500cc, the annual third party premium currently charged is a uniform amount of Rs 2,863. So the extra amount spent on buying such cars would be slightly over Rs 5700. Cars with engines bigger than 1500 cc, attract a third party insurance cover of Rs 7,890 per annum. Such vehicles will become costlier by just over Rs 15,500.