LIMITED POWER OF ATTORNEY FOR
                        SECTION 16 REPORTING OBLIGATIONS

              Know all by these presents, that the undersigned, John Thain
hereby makes, constitutes and appoints Tony West, Keir Gumbs, Carolyn Mo and
Robert Wu as the undersigned's true and lawful attorney-in-fact, with full power
and authority as hereinafter described on behalf of and in the name, place and
stead of the undersigned to:

          (1) prepare, execute, acknowledge, deliver and file Forms 3, 4, and 5
          (including any amendments thereto) with respect to the securities of
          Uber Technologies, Inc., a Delaware corporation (the "Company"), with
          the SEC, any national securities exchanges and the Company, as
          considered necessary or advisable under Section 16(a) of the Exchange
          Act and the rules and regulations promulgated thereunder, as amended
          from time to time;

          (2) seek or obtain, as the undersigned's representative and on the
          undersigned's behalf, information on transactions in the Company's
          securities from any third party, including brokers, employee benefit
          plan administrators and trustees, and the undersigned hereby
          authorizes any such person to release any such information to the
          undersigned and approves and ratifies any such release of information;
          and

          (3) perform any and all other acts which in the discretion of such
          attorney-in-fact are necessary or desirable for and on behalf of the
          undersigned in connection with the foregoing.

          The undersigned acknowledges that:

          (1) this Power of Attorney authorizes, but does not require, such
          attorney-in-fact to act in their discretion on information provided to
          such attorney-in-fact without independent verification of such
          information;

          (2) any documents prepared and/or executed by such attorney-in-fact on
          behalf of the undersigned pursuant to this Power of Attorney will be
          in such form and will contain such information and disclosure as such
          attorney-in-fact, in his or her discretion, deems necessary or
          desirable;

          (3) neither the Company nor such attorney-in-fact assumes (i) any
          liability for the undersigned's responsibility to comply with the
          requirement of the Exchange Act, (ii) any liability of the undersigned
          for any failure to comply with such requirements, or (iii) any
          obligation or liability of the undersigned for profit disgorgement
          under Section 16(b) of the Exchange Act; and

          (4) this Power of Attorney does not relieve the undersigned from
          responsibility for compliance with the undersigned's obligations under
          the Exchange Act, including without limitation the reporting
          requirements under Section 16 of the Exchange Act.

              The undersigned hereby gives and grants the foregoing attorney-in-
fact full power and authority to do and perform all and every act and thing
whatsoever requisite, necessary or appropriate to be done in and about the
foregoing matters as fully to all intents and purposes as the undersigned might
or could do if present, hereby ratifying all that such attorney-in-fact of, for
and on behalf of the undersigned, shall lawfully do or cause to be done by
virtue of this Limited Power of Attorney.

              This Power of Attorney shall remain in full force and effect until
revoked by the undersigned in a signed writing delivered to such attorney-in-
fact.

              IN WITNESS WHEREOF, the undersigned has caused this Power of
Attorney to be executed as of April 17, 2019.


                                         By: /s/ John Thain
                                             --------------
                                         Name: John Thain