Colo. Rev. Stat. § 44-20-202
It is unlawful for any person who is engaged, either directly or indirectly, in the manufacture or distribution of motor vehicles, to sell or enter into a contract to sell motor vehicles, whether patented or unpatented, to any person who is engaged or intends to engage in the business of selling the motor vehicles at retail in this state, on the condition or with an agreement or understanding, either express or implied, that the person so engaged in selling motor vehicles at retail in any manner shall finance the purchase or sale of any one or number of motor vehicles only with or through a designated person or class of persons or shall sell and assign the conditional sales contracts, chattel mortgages, or leases arising from the sale of motor vehicles or any one or number thereof only to a designated person or class of persons, when the effect of the condition, agreement, or understanding so entered into may be to lessen or eliminate competition, or create or tend to create a monopoly in the person or class of persons who are designated, by virtue of the condition, agreement, or understanding to finance the purchase or sale of motor vehicles or to purchase conditional sales contracts, chattel mortgages, or leases. Any such condition, agreement, or understanding is declared to be void and against the public policy of this state.
C.R.S. § 44-20-202
This section is similar to former § 12-6-202 as it existed prior to 2018.