U
20 makes
    U.S.                USA  1899  1900  U.S. M. V. Co. New York N. Y.
    U.S.                USA  1908        U.S. M. C. Co. Upper Sandusky O.
    U.S. Long Distance  USA  1900  1904  U.S. Long Distance Auto. Co.  New York N. Y.
    UAZ                 RUS  1942  now   UAZ Ulianovskij Avtomobilnyj Zavod, Ulianovsk
UAZ 31512 (2002)

    Ultima               GB  1983  now   Ultima Sports Ltd Leicester UK
Ultima GTR 640 (2005)

    Ultimate            USA  1920        n/a
    Unic                 FR  1904  1939  Georges Richard, Puteaux
Unic Landaulette Taxi (1911)

    Union               USA  1902  1905  Union Auto. Co. Anderson Ind.
    Union               USA  1908  1909  Union Car. Co. St. Louis Miss.
    Unipower             GB  1966  1970  n/a
    Unique               GB  1916        The Motor Carrier and Cycle Co., Clapham, London
    Unit/Silent Unit     GB  1920  1923  Rotary Unit Co.Ltd., Woodburn, Buckinghamshire
    United States       USA  1899  1901  United States Auto. Co. Attleboro Mass.
    Universal            GB  1914  1916  Turner Motor Manufacturing Co.Ltd., Wolverhampton
    Uno 001 / Catlin    SWE  1988  1991  U. Johansson, Linköping (two prototypes)
    Urecar               GB  1923        Urecar Motor Co., Bournemouth, Hampshire
    Upton               USA  1904  1907  Upton M. Co. Lebanon Pa.
    Upton               USA  1909  1905  Upton Machinery Co. Beverley Mass.
    Utile                GB  1904        Utile Motor Manufacturing Co.Ltd., Kew, Surrey
    Utility             USA  1921  1922  Victor W. Page Motors Corp., Stamford Conn.
    Utopian              GB  1914        n/a