Mass. Gen. Laws ch. 93B, § 15
(a) Any manufacturer, distributor or motor vehicle dealer who suffers any loss of money or property, real or personal, as a result of the use or employment by a manufacturer, distributor or motor vehicle dealer of an unfair method of competition or an unfair or deceptive act or practice as defined by this chapter, any act prohibited or declared unlawful by this chapter, or any rule or regulation adopted under this chapter, may bring an action in the superior court, or if applicable in the federal district court for the district of Massachusetts, for damages and equitable relief, including injunctive relief, as described in the following sentence: The party filing suit may obtain equitable relief if it can be demonstrated:
(e) The rights and remedies provided for in this chapter shall be the exclusive rights and remedies available under state law arising out of a violation of this chapter. Notwithstanding any term or provision of a franchise agreement to the contrary: