MERCURY, Detroit, USA, 1938-
MENTASCHI, Lambrate, Italy, 1924
MENON, Treviso, Italy, 1897-1902
MELDI, Turin, Italy, 1927-1933
MEGA, Aix-les-Bains, France, 1992-
MATRA, Romorantin, France, 1965-1984
MATHIS, Strasbourg, Germany/France, 1905-1950
MARCHAND, Piacenza, Italy, 1898-1906
MARUTI, New Delhi, India, 1983-
MARTINI, Frauemfeld/St. Blasien, Switzerland, 1897-1934
MARMON, Indianapolis, USA, 1902-1933
MARLBOROUGH, Auberville, France/ London/Weybridge, UK, 1906-1926
MARCOS, Luton/Bradford-on-Avon/ Westbury, UK, 1958-1971,1981-
MARINO, Padua, Italy, 1923-1930
MARENDAZ, London/Maidenhead, UK, 1926-1936
MARENGO, Genoa, Italy, 1907-1909
MANTOVANI, Turin, Italy, 1903-1906
McFARLAN, Connersville, USA, 1910-1928
McLAUGHLIN, Ottawa, Canada, 1908-1922
McLaren, Woking, UK, 1989-
MAJOCCHI, Milan, Italy, 1898-1906
MAYBACH, Friedrichshafen, Germany, 1921-1941
MASERATI, Bologna/Modena, Italy, 1926-
MAZDA, Hiroshima, Japan, 1960-
MAGGIORA, Padua, Italy, 1905