Me. Rev. Stat. tit. 10, § 1177

It shall be unlawful directly or indirectly to impose unreasonable restrictions on the motor vehicle dealer or franchisee relative to transfer, sale, right to renew, termination, discipline, noncompetition covenants, site-contract whether by sublease, collateral pledge of lease, or otherwise, right of first refusal to purchase, option to purchase, compliance with subjective standards and assertion of legal or equitable rights.