FTS Low Cost Car Insurance Boston stands at number 25 in the list of cities with most expensive car insurance rates in MA State. Car owners in Boston MA pay 10% more or say 0.10 times more in car insurance premium than the state car insurance average and 2 times more than the national average. Average yearly car insurance rates in Boston is about $1617 per year compared to $900 for the national average. Timing :- Mon To Sun - Open 24 Hours