The 1975 World Sportscar Championship season was the 23rd season of FIA World Sportscar Championship motor racing. It featured the 1975 World Championship for Makes[1] which was open to Group 5 Sports Cars and Group 4 Special GT Cars.[2] It also included the FIA Cup for GT Cars and the FIA Cup for 2-Litre Cars.[1] The three titles were contested concurrently over a nine race series which ran from 1 February to 12 July 1975.
| Rnd | Race | Circuit or Location | Date | |
|---|---|---|---|---|
| 1 |  24 Hours of Daytona† | Daytona International Speedway | 1 February 2 February | |
| 2 |  1000 km of Mugello | Mugello Circuit | 23 March | |
| 3 |  800 km of Dijon | Dijon-Prenois | 6 April | |
| 4 | Trofeo Filippo Caracciolo (1000km) | Autodromo Nazionale Monza | 20 April | |
| 5 |  1000km Spa | Circuit de Spa-Francorchamps | 4 May | |
| 6 | Coppa Florio (1000 km) | Autodromo di Pergusa | 18 May | |
| 7 |  1000km Nürburgring | Nürburgring | 1 June | |
| 8 |  1000km Zeltweg | Österreichring | 29 June | |
| 9 | Watkins Glen 6 Hours | Watkins Glen International | 12 July |
Points towards the World Championship for Makes were awarded to the top 10 positions in each race in the order of 20-15-12-10-8-6-4-3-2-1.[5] Points were awarded to the position gained by the highest placed car from each make with any positions filled by other cars from the same make not attracting points. No points were awarded to positions gained by cars other than Group 5 Sports Cars and Group 4 Special GT Cars.
Only the 7 best results were retained for championship classification.[6] Discarded points are shown (below) within brackets
| Pos. | Make | Rd 1 | Rd 2 | Rd 3 | Rd 4 | Rd 5 | Rd 6 | Rd 7 | Rd 8 | Rd 9 | Total | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1 | Alfa Romeo | (15) | 20 | 20 | 20 | 20 | 20 | 20 | 20 | 140 | ||
| 2 | Porsche | 20 | 12 | 15 | 15 | 12 | 12 | 12 | (12) | (10) | 98 | |
| 3 | Alpine-Renault | 20 | 12 | 10 | 12 | 54 | ||||||
| 4 |  Chevron | 8 | 12 | 3 | 2 | 6 | 1 | 4 | 36 | |||
| 5 | Mirage | 15 | 15 | |||||||||
| 6 | March | 4 | 8 | 12 | ||||||||
| 7 | Ligier | 4 | 6 | 10 | ||||||||
| Lola | 1 | 3 | 6 | 10 | ||||||||
| 9 | Ferrari | 4 | 4 | |||||||||
| 10 | Chevrolet | 3 | 3 |
| Pos. | Make | Rd 1 | Rd 2 | Rd 3 | Rd 4 | Rd 5 | Rd 6 | Rd 7 | Rd 8 | Rd 9 | Total | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1 | Porsche | 15 | 20 | 20 | 20 | 20 | 20 | 20 | 135 | |||
| 2 | Ferrari | 20 | 20 | |||||||||
| 3 | Chevrolet | 8 | 10 | 18 | ||||||||
| 4 | De Tomaso | 8 | 8 | |||||||||
| 5 |  Datsun | 3 | 3 |
| Pos. | Make | Rd 1 | Rd 2 | Rd 3 | Rd 4 | Rd 5 | Rd 6 | Rd 7 | Rd 8 | Rd 9 | Total | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1 | Chevron | 20 | 20 | 15 | 20 | 20 | 20 | 15 | 130 | |||
| 2 | Lola | 15 | 15 | 20 | 50 | |||||||
| 3 | Alpine | 15 | 12 | 20 | 47 |
Toine Hezemans
Manfred Schurti
#42 
Reine Wisell