October 29, 1996

          Consorcio G Grupo Dina, S.A. de C.V.
          Tlacoquemecatl 41
          Colonia del Valle
          03100, Mexico, D.F.
          Mexico

          Ladies and Gentlemen:

                    I have acted as special counsel to Consorcio G
          Grupo Dina, S.A. de C.V., a corporation organized under
          the laws of the United Mexican States ("Grupo Dina" or
          the "Company"), in connection with the proposed offer
          (the "Exchange Offer") by Grupo Dina and MCII Holdings
          (USA), Inc. a Delaware corporation ("MCII Holdings" and,
          collectively with Grupo Dina, the "Issuers") to exchange 
          an aggregate principal amount of up to $206,499,680 of 
          Senior Secured Discount Exchange Notes due 2002 (the "New 
          Notes") of the Issuers for a like principal amount of their 
          issued and outstanding Senior Secured Discount Notes due 2002 
          (the "Old Notes" and, collectively with the New Notes, the 
          "Notes").

                    The New Notes are being issued pursuant to the
          Indenture dated April 30, 1996 (the "Indenture") among
          Grupo Dina, MCII Holdings and IBJ Schroder Bank & Trust
          Company, as Trustee.

                    In connection with the Exchange Offer, the
          Issuers have filed registration statements relating to
          the New Notes on Form F-1 (No. 333-8843) and S-1 (No.
          333-8871) with the Securities and Exchange Commission
          (the "Commission") on July 25, 1996 under the Securities
          Act of 1933, as amended (the "Securities Act"), Amendment
          No. 1 thereto, filed with the Commission on October 8,
          1996 and Amendment No. 2 thereto, filed with the Commis-
          sion on the date hereof (such registration statements, as
          so amended, being hereinafter referred to as the "Regis-
          tration Statement").  This opinion is delivered in accor-
          dance with the requirements of Item 601(b)(5) of Regula-
          tion S-K promulgated under the Securities Act.

                    I am qualified under Mexican law to give this
          opinion, and I express no opinion other than as to the
          laws of the United Mexican States.  To the extent that
          the federal laws of the United States of America and the
          State of New York are relevant to the opinions set forth
          below, I have assumed the correctness of, have not made
          any independent examination of the matters covered by and
          my opinion is in all respects subject to, the opinion to
          you dated the date hereof of Skadden, Arps, Slate,
          Meagher & Flom LLP, United States counsel to the Company.

                    In giving this opinion I have examined and
          relied on:

                    (a)  a certified copy of the by-laws
                         (estatutos) of the Company;

                    (b)  the Indenture, in the form filed as an
                         exhibit to the Registration Statement;

                    (c)  a copy of the Registration Statement; and

          I have relied as to certain factual matters on certifi-
          cates of officers of the Company.  I have assumed and
          have not verified that the signatures on all documents
          that I have examined are genuine.

                    Subject to the above, I am of the opinion that
          the New Notes have been duly and validly authorized by
          the Company and, when the New Notes, in the form included
          with the Indenture filed as an exhibit to the Registra-
          tion Statement, have been duly executed, authenticated
          and delivered pursuant to the Indenture, will be valid
          and legally binding obligations of the Company.

                    I consent to the filing of this opinion with
          the Commission as an Exhibit to the Registration State-
          ment and to the reference to my name under the caption
          "Legal Matters" in the Prospectus which forms a part of
          the Registration Statement.  In giving this consent I do
          not admit that I am in the category of persons whose
          consent is required under Section 7 of the Securities
          Act.

                                        Sincerely,

                                        /s/ Guillermo A. Kareh
                                        ----------------------
                                        Guillermo A. Kareh