41 week of 1973

Circuit/Rally Championship Date Winers Chassis
United Kingdom Brands Hatch Brytyjska Formuła Atlantic 1973.10.12 March 73B - Ford
France Dijon-Prenois Swiss Formula Three Championship 1973.10.14 Merlyn Mk 15 - Ford
United States Indianapolis Raceway Park IMSA GT Championship 1973.10.14 Porsche Carrera
Sweden Knutstorp Europejskie Mistrzostwa Rallycross 1973.10.14 Ford Escort RS 1600 BDA
United States Laguna Seca Can-Am 1973.10.14 Porsche 917/30
American Formula Super Vee Championship 1973.10.14 Lola T252 - Volkswagen
United Kingdom Mallory Park John Player European F3 1973.10.14 March 733 - Ford
Italy Vallelunga Mistrzostwa Europy Formuły 2 1973.10.14 March 732 - BMW
Italy Rajd San Remo World Rally Championship 1973.10.10 Alpine Renault A110 - Shelby