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.[1] The World Championship for Makes, which was open to Group 5 Sports Cars and Group 4 GT Cars,[2] was won by Matra and the Cup for GT Cars, which was open only to Group 4 GT Cars,[3] was won by Porsche.
The following races counted towards the 1973 World Championship for Makes and the 1973 Cup for GT Cars.
| Rnd | Race | Circuit or Location | Date | |
|---|---|---|---|---|
| 1 |  24 Hours of Daytona | Daytona International Speedway | 3 February 4 February | |
| 2 |  Vallelunga 6 Hours | Vallelunga | 25 March | |
| 3 |  Dijon 1000 Kilometres | Dijon-Prenois | 15 April | |
| 4 | 1000km Monza | Autodromo Nazionale Monza | 25 April | |
| 5 |  1000km Spa | Circuit de Spa-Francorchamps | 6 May | |
| 6 | Targa Florio | Circuito Piccolo delle Madonie | 13 May | |
| 7 |  ADAC 1000km Nürburgring | Nürburgring | 27 May | |
| 8 | 24 Hours of Le Mans | Circuit de la Sarthe | 9 June 10 June | |
| 9 |  Austrian 1000km† | Österreichring | 24 June | |
| 10 | Watkins Glen 6 Hours | Watkins Glen International | 21 July |
| Pos | Make | Rd 1 | Rd 2 | Rd 3 | Rd 4 | Rd 5 | Rd 6 | Rd 7 | Rd 8 | Rd 9 | Rd 10 | Total | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1 | Matra | 20 | 20 | 12 | 12 | 20 | 20 | 20 | 124 | ||||
| 2 | Ferrari | 15 | 15 | 15 | 20 | (10) | 20 | 15 | (12) | 15 | 115 | ||
| 3 | Porsche | 20 | 8 | (3) | (3) | 8 | 20 | 10 | 10 | (3) | 6 | 82 | |
| 4 |  Mirage | 8 | 20 | 10 | 10 | 48 | |||||||
| 5 | Lola | 6 | 6 | 10 | 6 | 8 | 36 | ||||||
| 6 | Chevron | 1 | 4 | 2 | 10 | 12 | 1 | 30 | |||||
| 7 | Alfa Romeo | 8 | 1 | 4 | 4 | 17 | |||||||
| 8 | Lancia | 15 | 15 | ||||||||||
| 9 | Chevrolet | 12 | 2 | 14 | |||||||||
| 10 | Ligier | 3 | 3 |
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.[6] The 7 best results were retained [7] for each make. Discarded points are shown in the above table within brackets.
| Pos | Make | Rd 1 | Rd 2 | Rd 3 | Rd 4 | Rd 5 | Rd 6 | Rd 7 | Rd 8 | Rd 9 | Rd 10 | Total |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1 | Porsche | (12) | 20 | 20 | 20 | 20 | 20 | 20 | (15) | 20 | 140 | |
| 2 | Ferrari | 20 | 20 | 40 | ||||||||
| 3 | Chevrolet | 15 | 8 | 15 | 38 | |||||||
| 4 | Alfa Romeo | 10 | 10 | |||||||||
No GT entries were received for Round 9.
The following models contributed to the nett pointscores of their respective makes.
