Group discounts, like the popular AAA discount, have long been the elephant in the Massachusetts auto insurance room. Some of these groups are “open” group discounts that are open to anyone (like the AAA discount); others are “closed” group discounts that can only be received by going through a particular agency or directly through the company. *As a disclaimer: some of these may not be complete group listings, certain groups may no longer be available, and the discount percentages may not be 100% accurate.