1973 World Championship for Makes

The 1973 World Sportscar Championship season was the 21st season of FIA World Sportscar Championship motor racing. It featured the 1973 World Championship for Makes and the 1973 Cup for GT Cars which were contested concurrently over a ten race series. The World Championship for Makes, which was open to Group 5 Sports Cars and Group 4 GT Cars, was won by Matra and the Cup for GT Cars, which was open only to Group 4 GT Cars, was won by Porsche.

Schedule
The following races counted towards the 1973 World Championship for Makes and the 1973 Cup for GT Cars. † - No GT entries were received for the Österreichring event which was held only two weeks after Le Mans. The Buenos Aires 1000 km, scheduled to be held on 21 October, was cancelled six weeks after the running of the Watkins Glen 6 Hours.

World Championship for Makes
Championship points were awarded to the top 10 finishers in the order of 20-15-12-10-8-6-4-3-2-1 but only for the highest placed car of each make. The 7 best results were retained for each make. Discarded points are shown in the above table within brackets.

Cup for GT Cars
No GT entries were received for Round 9.

The cars
The following models contributed to the nett pointscores of their respective makes.

World Championship for Makes

 * Matra Simca MS670 & Matra Simca MS670B
 * Ferrari 365 GTB/4 Daytona & Ferrari 312PB
 * Porsche 911 Carrera RSR & Porsche 908/3
 * Mirage M6 Ford Cosworth
 * Lola T282 Ford Cosworth & Lola T290 Ford Cosworth
 * Chevron B21 Ford Cosworth & Chevron B23 Ford Cosworth
 * Alfa Romeo 33TT3 & Alfa Romeo Giulia GTAm
 * Lancia Stratos
 * Chevrolet Corvette
 * Ligier JS2 Maserati

Cup for GT Cars

 * Porsche 911S & Porsche 911 Carrera RSR
 * Ferrari 365 GTB/4 Daytona
 * Chevrolet Corvette
 * Alfa Romeo Giulia GTAm